Green Car Congress
Home Topics Archives About Contact  RSS Headlines
Google search



[Due to the increasing size of the archives, each topic page now contains only the prior 365 days of content. Access to older stories is now solely through the Monthly Archive pages or the site search function.]

USC team uses mixed conduction membranes to suppress polysulfide shuttle in Li-S batteries

February 17, 2017

One of the major issues hobbling the commercialization of high energy-density lithium-sulfur batteries is the “polysulfide shuttle”—the shuttling of polysulfide ions between the cathode and anode. The polysulfide shuttle is a major technical issue that limits the electrical performance and cycle life of this type of battery. Addressing this polysulfide shuttle—which causes self-discharge, low charging efficiencies, and irreversible capacity losses—has been a major focus of research and development.

Now, in an open-access paper published in the January issue of the Journal of the Electrochemical Society, Sri Narayan and Derek Moy of the USC Loker Hydrocarbon Research Institute report a novel approach to the problem. The USC team developed a “mixed conduction membrane” (MCM)—a thin non-porous lithium-ion conducting barrier that simply restricts the soluble polysulfides to the positive electrode.

More... | Comments (1)

Government of Canada awards $18.2M for aluminum autoparts and better Li-ion battery management

The Government of Canada is awarding a total of $18.2 million to two companies that have developed innovations with the potential to make cars lighter, more fuel efficient and, in the case of electric cars, better performing due to a longer battery life.

Astrex Inc. of Lakeshore will receive a repayable contribution of up to $17 million from the Federal Economic Development Agency’s (FedDev Ontario) Advanced Manufacturing Fund. The investment will enable Astrex, a manufacturer of auto parts, to establish a facility that produces lightweight, high-strength aluminum components. The parts manufactured at this plant will reduce fuel consumption and lower carbon emissions.

More... | Comments (3)

Wireless charging J2954 testing to 11 kW in 2017 for LD, HD starting up to 250 kW; autonomous charging and infrastructure proposal for California

February 13, 2017

SAE International is working to ensure that electric vehicle wireless power transfer systems from diverse manufacturers will interoperate seamlessly with each other to prepare for commercialization in 2020. The SAE TIR (Technical Information Report) J2954 provides guidance to ensure performance and safety of Wireless Power Transfer (WPT) Systems provided from one vendor as well as interoperability when parts of the system are provided from different vendors.

SAE International is engaged with the Idaho National Lab and US Department of Energy (DOE) in bench-testing of WPT 3 (11 kW) levels in 2017, said Jesse Schneider, chair of the SAE J2954 task force, in his presentation at the SAE 2017 Hybrid and Electric Vehicle Technologies Symposium last week in San Diego. In addition, eight OEMs have light-duty vehicle testing planned to begin in third quarter for WPT 1-3 which is scheduled to be completed in 2018.

More... | Comments (5)

POSCO begins lithium production for first time in Korea; domestic supply for Samsung, LG; investing $261M in anode materials by 2020

February 12, 2017

Korea-based steel-maker POSCO has begun commercial production of lithium in Korea for the first time. On 7 February, POSCO held a ceremony for the completion of a PosLX (POSCO Lithium Extraction) plant with an annual capacity of 2,500 tons at its lithium plant at Gwangyang Works.

At the opening ceremony—the attendees of which included Ung-beom Lee, president of LG Chem, and Nam-seong Cho, president of Samsung SDI—Jong-joo Kim, the director of the Ministry of Trade, Industry and Energy noted that Korea currently imports all lithium carbonate for batteries despite being a world-class producer of secondary batteries. “Today’s completion of the plant will empower POSCO to produce lithium carbonate for batteries on its own, relieving secondary battery makers of worries about securing quality raw materials.

More... | Comments (1)

Volvo Cars to introduce 3-cylinder FWD PHEV in 2018, BEVs & 48V mild hybrid in 2019; Modular Electrification Platform

February 09, 2017

Volvo Cars will introduce a front-wheel drive (FWD), 3-cylinder engine variant of its Twin Engine plug-in hybrid electric vehicle system in 2018, followed by its first production battery-electric vehicles and a new 48V mild hybrid system in 2019, according to Mats Anderson, Senior Director of Electric Propulsion Systems. Anderson was speaking at the SAE 2017 Hybrid and Electric Vehicle Technologies Symposium in San Diego.

Currently in its line-up, Volvo offers the T8 Twin Engine all-wheel drive (AWD) system, currently on the XC 90 T8 Drive-E Twin Engine (earlier post). The 4-cylinder engine T8 AWD is intended to match the performance of 6- and 8-cylinder engined competitors, said Anderson. The new Twin Engine FWD platform will use a 3-cylinder engine, with the system matching the performance of 4- and 6-cylinder engined competitors.

More... | Comments (0)

Bosch establishing new electromobility operating unit in Powertrain Solutions; start at beginning of 2018

February 08, 2017

Bosch is forming an operating unit specifically for electromobility. The unit will be part of the new Powertrain Solutions division. From the start of 2018, Powertrain Solutions will include the company’s electromobility activities as well as the existing Gasoline Systems and Diesel Systems divisions. Thus, in the future, Bosch will supply existing and new customers with all powertrain technologies from a single source.

In addition to the 20 million new hybrids and electric vehicles that Bosch esimates will be produced in 2025, there will be some 85 million new gasoline and diesel-powered vehicles. Thus, as well as expanding electromobility, Bosch will work intensively on further improving combustion-engine technology.

More... | Comments (1)

Researchers suggest approach for boosting Li-S performance; conversion of Li2S to sulfur without polysulfides

February 06, 2017

Lithium-sulfur batteries are one of the most promising alternatives for next-generation high-energy-density batteries; however, one of the main obstacles to widespread commercialization that still needs to be addressed is the polysulfide shuttle mechanism between the two electrodes. The polysulfide shuttle—the migration of lithium polysulfides formed during charge and discharge from cathode to anode—leads to serious self-discharge, poor efficiency and limited cycle life. (E.g., earlier post.)

Now, an international team of researchers in Europe is suggesting a possible approach to convert Li2S into sulfur without the detectible formation of polysulfides. A paper on their work is published in the Journal of Power Sources.

More... | Comments (1)

New ORNL protocol reduces Li-ion battery formation time 6x or more without affecting battery performance

February 03, 2017

A new process developed by Oak Ridge National Laboratory could alleviate a bottleneck in battery manufacturing and deliver higher capacity batteries for electric vehicles and consumer devices. (Earlier post.) The ORNL method, published as an open-access paper in the Journal of Power Sources, also conserves lithium, which improves battery capacity. The process is applicable to all lithium-ion batteries and can be tuned for other chemistries as well, said principal investigator David Wood.

The formation process—where batteries undergo repeated cycling to stabilize and activate them for use—typically takes several days or more, and it is necessary for providing a stable solid electrolyte interphase on the anode (at low potentials vs. Li/Li+) for preventing irreversible consumption of electrolyte and lithium ions. An analogous layer known as the cathode electrolyte interphase layer forms at the cathode at high potentials vs. Li/Li+.

More... | Comments (10)

MIT study finds lithium sulfide solid electrolyte more brittle than ideal for batteries

February 02, 2017

Researchers at MIT have probed the mechanical properties of Li2S–P2S5—thought to be a promising amorphous lithium-ion-conducting solid electrolyte—to determine its mechanical performance when incorporated into batteries.

The study, published in the journal Advanced Energy Materials, found that the material is more brittle than would be ideal for battery use. However, suggests Frank McGrogan, lead author of the paper, as long as its properties are known and systems designed accordingly, it could still have potential for such uses.

More... | Comments (3)

Berkeley Lab high-resolution imaging reveals new understanding of LMNO cathode particles

Using advanced imaging techniques, scientists at the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) have been able to observe what exactly happens inside a cathode particle as lithium-ion batteries are charged and discharged. The team, led led by Berkeley Lab materials chemist Guoying Chen, uncovered important insights into reactions in cathode materials, including the discovery of particle cracking as the cathode is charged, which can reduce battery capacity and life.

The study, published as an open-access paper in the journal Nature Communications, used advanced two-dimensional and three-dimensional nano-tomography on a series of well-formed LixMn1.5Ni0.5O4 (0≤x≤1) crystals to visualize the mesoscale phase distribution, as a function of Li content at the sub-particle level.

More... | Comments (0)

Chinese battery company takes 22% stake in Valmet Automotive; strategic partnership for EVs

January 31, 2017

China-based Contemporary Amperex Technology Limited (CATL), a leading global provider of battery and energy storage solutions, has taken a 22% stake in Finland-based Valmet Automotive as part of a new strategic partnership in electric automotive solutions. Simultaneously CATL has subscribed to new shares issued by Valmet Automotive for a 22 % ownership in the company. After the new share issue, the owners of Valmet Automotive are Pontos (39%), Tesi (39%) and CATL (22%).

CATL is a private Chinese company developing, manufacturing and providing after-sales services of lithium-ion battery solutions for electric vehicles and energy storage markets. It is among the three leading electric vehicle battery providers globally and the clear market leader in China with a large portfolio of customers. CATL is seeking to expand its business in the fast evolving European electric vehicle market. At the end of 2016, CATL employed more than 10,000 employees worldwide.

More... | Comments (1)

Navigant: 2016 advanced battery shipments through Q3 = 323M cells and $3.8B in sales

January 26, 2017

According to a new report from Navigant Research, the shipment volume of advanced batteries for the first three quarters of 2016 equates to more than 323.5 million individual battery cells, 16.1 GWh of energy capacity, 61.4 GW of power capacity, and $3.8 billion in sales. The majority of the advanced batteries in 2016 have been manufactured in Asia Pacific and shipped around the world.

For the purposes of the report, advanced batteries are defined as rechargeable batteries with a chemistry that has only entered into the market as a mass-produced product in the last two decades for use in the automotive or stationary energy storage system sectors. The report does not include experimental batteries that have not yet reached mass production. The chemistries that are included in the report are all lithium ion (Li-ion) chemistries, flow battery chemistries, sodium-metal halide, and advanced lead-acid.

More... | Comments (0)

AKASOL to provide Li-ion batteries for electric buses to Scandinavian OEM through 2030; up to 4,500 systems

January 23, 2017

Germany-based Li-ion manufacturer AKASOL (earlier post) has signed a contract for the supply of Li-ion batteries to an unnamed international commercial vehicle manufacturer in Scandinavia for its entire electric bus fleet through 2023. In total, the order includes the delivery of up to 4,500 battery systems—revenue on the order of up to some triple-digit million euro figure.

The first series production buses fitted with AKASOL-battery systems are expected in 2018. The buses will feature either hybrid or battery-electric drive and have a capacity between 150 and 300 kWh.

More... | Comments (0)

Northwestern team devises new computational design framework for optimized coatings for Li-ion cathodes to prolong cycle life

Researchers at Northwestern University, with a colleague from the University of Wisconsin, Madison, have developed a new computational design framework that can pinpoint optimal materials with which to coat the cathode in lithium-ion batteries. The optimized coatings have the potential to prolong the cycle-life of Li-ion batteries and surpass the performance of common coatings based on conventional materials.

The high-throughput density-functional-theory-based framework, presented in an open access paper in the journal Nature Communications, consists of reaction models that describe thermodynamic and electrochemical stabilities, and acid-scavenging capabilities of materials.

More... | Comments (0)

Georgia Tech team develops simple, low-cost process for oxide nanowires; superior separators for Li-ion batteries

January 20, 2017

Researchers at Georgia Tech have developed a simple technique for producing oxide nanowires directly from bulk materials under ambient conditions without the use of catalysts or any external stimuli. The process could significantly lower the cost of producing the one-dimensional (1D) nanostructures, enabling a broad range of uses in lightweight structural composites, advanced sensors, electronic devices—and thermally-stable and strong battery membranes able to withstand temperatures of more than 1,000 ˚C.

In a paper in the journal Science, the team reported the transformation of multimicrometer-sized particles of aluminum or magnesium alloys into alkoxide nanowires of tunable dimensions, which were converted into oxide nanowires upon heating in air. Fabricated separators based on aluminum oxide nanowires enhanced the safety and rate capabilities of lithium-ion batteries.

More... | Comments (6)

Researchers call for integration of materials sustainability into battery research; the need for in situ monitoring

January 18, 2017

In a review paper in the journal Nature Materials, Jean-Marie Tarascon (Professor at College de France and Director of RS2E, French Network on Electrochemical Energy Storage) and Clare Gray (Professor at the University of Cambridge), call for integrating the sustainability of battery materials into the R&D efforts to improve rechargeable batteries. The pair argue for the selection of chemistries that have a minimum footprint in nature and that are more readily recycled or integrated into a full circular economy.

Concerns over sustainability as well as cost directs that battery lifetimes must be greatly improved, and second-life applications considered during the development phase. As part of this, Gray and Tarascon suggest, the state of health of batteries must be monitored continuously during operation to minimize their degradation. This requirement, in turn, pushed the boundaries of operando techniques to monitor increasingly complex processes.

More... | Comments (0)

ECS requesting proposals for third ECS Toyota Young Investigator Fellowship for projects in automotive green energy technology

January 05, 2017

ECS (The Electrochemical Society), in partnership with the Toyota Research Institute of North America (TRINA), a division of Toyota Motor Engineering & Manufacturing North America, Inc. (TEMA), is requesting proposals for the third ECS Toyota Young Investigator Fellowship from young professors and scholars pursuing innovative electrochemical research in green energy technology.

The automotive industry currently faces three challenges regarding environmental and energy issues: (1) finding a viable alternative energy source as a replacement for oil; (2) reducing CO2 emissions; and (3) preventing air pollution. Although the demand for oil alternatives—such as natural gas, electricity and hydrogen—may grow, each alternative energy source has its disadvantages. Currently, oil remains the main source of automotive fuel; however, further research and development of alternative energies may bring change.

More... | Comments (0)

New core-shell yolk-shell nanohybrid silicon anode for high-performance Li-ion batteries

January 01, 2017

A team from Zhejiang University of Technology and the Technological and Higher Education Institute of Hong Kong has developed a core-shell yolk-shell Si@C@void@C nanohybrid for use as a Li-ion battery anode. The new nanohybrid provides better conductivity and corrosion resistance than a yolk-shell Si@void@C nanostructure—which itself improves the low Li+/electron conductivity and buffers the huge volume variation of silicon.

In a paper in the Journal of Power Sources, the team reports that the Si@C@void@C electrodes exhibited remarkably enhanced reversible capacity, cycling stability (∼1366 mA h g−1 after 50 cycles at 500 mA g−1, with a capacity retention of ∼71% with respect to the initial reversible capacity of 1910 mAh g−1 at 100 mA g−1), and rate performance (with a capacity retention of ∼60% at 4000 mA g−1).

More... | Comments (4)

Researchers develop robust biopolymer network binder enabling high sulfur loading in Li-S electrodes

December 24, 2016

Researchers from China and Australia have developed a mechanically robust biopolymer network binder that enabled the preparation of high-loading sulfur electrodes to improve the electrochemical performance of Li-sulfur batteries. The binder supported a high-sulfur-loading electrode of 19.8 mg cm-2 with an ultrahigh areal specific capacity of 26.4 mAh cm-2.

The network binder effectively prevented polysulfides within the electrode from shuttling and, consequently, improved electrochemical performance. This study, published in the RSC journal Energy & Environmental Science, identifies a new way to obtaining high-energy-density batteries by the simple application of robust network biopolymer binders that are inherently low-cost and environmentally friendly.

More... | Comments (2)

Caltech, CMU researchers measure mechanical properties of Li at small scale; implications for Li metal anode development

December 21, 2016

Likely next-generation battery chemistries such as Li-sulfur or Li-air envision the use of a Li metal anode coupled with an advanced cathode. However, the use of lithium metal anodes in rechargeable batteries has been restricted due to dendrite growth that can cause short-circuits or explosions. Solid-state electrolytes appear to be a promising solution to suppress dendrite growth. However, a lack of knowledge of the mechanical properties of lithium at the very small scale (nano- and micro-) hampers the understanding of the mechanical interactions at the interface of the electrolyte with the Li electrode.

Now, a joint team of researchers from Caltech and Carnegie Mellon University has measured for the first time the strength of lithium metal at the nano- and micro-scale. In a paper in Proceedings of the National Academy of Sciences (PNAS), they report that that Li exhibits a strong size effect at room and elevated temperature. First-principle calculations show a high level of elastic anisotropy (variation of elastic properties with direction of measurement). Based on the results, they suggest rational guidelines for anode/electrolyte selection and operating conditions that will lead to better cycling performance.

More... | Comments (1)

UMD researchers report solution to high interfacial impedance hampering developing of high-performance solid-state Li-ion batteries

December 20, 2016

Garnet-type solid-state electrolytes (SSEs) for Li-ion batteries offer a range of attractive benefits, including high ionic conductivity (approaching 1 mS cm−1 at room temperature); excellent environmental stability with processing flexibility; and a wide electrochemical stability window. However, development of high-performance solid-state Li-ion batteries (SSLiBs) using these materials has been hobbled by the the major challenge of the high solid–solid interfacial impedance between the garnet electrolyte and electrode materials.

Now, team of researchers at the University of Maryland Energy Research Center and A. James Clark School of Engineering report developing a solution to this problem. In a paper in Nature Materials, the researchers report effectively addressing the large interfacial impedance between a lithium metal anode and the garnet electrolyte by using ultrathin aluminium oxide (Al2O3) coating placed by atomic layer deposition.

More... | Comments (14)

Huawei Watt Lab develops graphene-assisted high-temperature Li-ion batteries

Huawei researchers recently unveiled what they said was the first long-lifespan graphene-assisted Li-ion battery able to withstand high temperatures. The announcement was made by Watt Laboratory, an organization under Huawei’s Central Research Institute, at the 57th Battery Symposium held in Japan.

Huawei’s research results show that new graphene-assisted heat-resistant technologies allow Li-ion batteries to remain functional in a 60 ˚C (140 ˚F) environment, a temperature 10 ˚C higher than the existing upper limit. The lifespan of the graphene-assisted Li-ion batteries will also be twice as long as ordinary Li-ion batteries.

More... | Comments (5)

Lucid Motors enters strategic partnership with LG Chem for Li-ion battery cells

December 19, 2016

Lucid Motors has signed a strategic supply agreement with LG Chem for lithium-ion battery cells. The agreement establishes LG Chem as one of the key suppliers of cells for Lucid’s products. The cylindrical cells that LG Chem will be producing for Lucid will feature a proprietary chemistry that has been developed together in partnership.

Lucid enters the agreement after nearly a decade of experience with electric vehicle battery pack research, development and commercial operations. These battery systems have logged over 20 million miles to date, and the data Lucid has collected and analyzed from these operations have been a critical factor in selecting the best strategic suppliers.

More... | Comments (2)

Dynexus licenses Idaho Lab’s IMB technology for forecasting battery health

December 16, 2016

Under an exclusive licensing agreement, Dynexus Technology will commercialize INL’s embedded wideband impedance technology for analyzing and forecasting the health, aging and safety characteristics of advanced energy storage devices. The 2011 R&D 100 Award-winning Impedance Measurement Box (IMB) was invented by INL’s Energy Storage Group in Idaho Falls, Idaho, with support from the DOE Office of Energy Efficiency and Renewable Energy’s Vehicle Technologies Office.

Dynexus, headquartered in Colorado, develops products and services that connect advanced sensor-based enterprise data with decision makers to improve access to embedded intelligence. The wideband impedance technique developed at INL delivers in-depth diagnostic insights not previously available outside the battery research lab, providing tremendous value for safer and more cost-effective commercial implementation of advanced energy storage technologies.

More... | Comments (1)

DOE to award almost $20M to new research and development projects for advanced vehicle technologies

December 15, 2016

The US Department of Energy (DOE) is issuing a program-wide funding opportunity (DE-FOA-0001629) for the Vehicle Technologies Office of up to $19.7 million, subject to appropriations, to support research and development of advanced vehicle technologies, including batteries, lightweight materials, and advanced combustion engines, as well as innovative technologies for energy efficient mobility.

The funding opportunity seeks projects in four areas of interest that apply to light, medium, and heavy-duty on-road vehicles, energy efficient mobility, and transportation infrastructure systems Battery500 Seedling Projects; Integrated Computational Materials Engineering Predictive Tools for Low-Cost Carbon Fiber; Emission Control Strategies for Advanced Combustion Engines; and Energy Efficient Mobility Research and Development.

More... | Comments (7)

UT Austin team devises new strategy for safe, low-cost, all-solid-state rechargeable Na or Li batteries suited for EVs

December 13, 2016

Researchers at the University of Texas at Austin, including Prof. John Goodenough, known around the world for his pioneering work that led to the invention of the rechargeable lithium-ion battery, have devised a new strategy for a safe, low-cost, all-solid-state rechargeable sodium or lithium battery cell that has the required energy density and cycle life for a battery that powers an all-electric road vehicle.

As reported in their paper in the RSC journal Energy & Environmental Science, the cells use a solid glass electrolyte having a Li+ or Na+ conductivity σi > 10-2 S cm-1 at 25°C with a motional enthalpy ΔHm ≈ 0.06 eV, which promises to offer acceptable operation at lower temperatures. The glass also has a surface that is wet by metallic lithium or sodium, which allows reversible plating/stripping of an alkali-metal anode without dendrites, and an energy-gap window Eg > 9 eV that makes it stable on contact with both an alkali-metal anode and a high-voltage cathode without the formation of an SEI.

More... | Comments (9)

CMU study suggests difficulties in reaching targeted low price points for Li-ion batteries

December 11, 2016

A new study by a team at Carnegie Mellon University examining the costs for varied cell dimensions, electrode thicknesses, chemistries, and production volumes of cylindrical and prismatic Li-ion batteries finds that although further cost savings are possible from increasing cell dimensions and electrode thicknesses, economies of scale have already been reached, and future cost reductions from increased production volumes are likely to be minimal.

Their findings suggest that prismatic cells, which are able to further capitalize on the cost reduction from larger formats, can offer further reductions than those possible for cylindrical cells. However, none of these changes are sufficient to reach the DOE energy storage target of $125 kWh by 2020, the study found. Even in the most optimistic scenario, when the cells are the largest (20720), electrodes the thickest (100 mm), and the production volume is 8 GWh per year, the cost per kWh for LMO cells is well above the DOE target. NCA cells are $206 kWh-1 and NMC cells are $180 kWh-1. Their paper is published in the Journal of Power Sources.

More... | Comments (38)

Canada invests $1.9M to support Nano One advanced battery production technology

December 08, 2016

The Government of Canada is investing up to $1.9 million from Innovation, Science and Economic Development Canada (ISED) in Vancouver-based Nano One to support the development of advanced battery technology for electric vehicles. Nano One produces low-cost high-performance energy storage materials for batteries as well as a wide range of advanced nanostructured composite materials. The new technology will reduce the cost of the energy storage materials in electric vehicle batteries, resulting in batteries that are longer lasting, easier to charge and able to produce more energy.

The funding, made available through the Automotive Supplier Innovation Program (ASIP), will support the development and production of electric vehicle battery material in Nano One’s pilot plant. The facility will simulate full-scale production of lithium-ion cathode materials and showcase Nano One’s patented processing technology.

More... | Comments (6)

New crosslinked gel electrolytes could create high energy density supercapacitors rivaling batteries

December 07, 2016

Researchers from Augmented Optics Ltd. and the University of Surrey, in collaboration with the University of Bristol, have developed new, crosslinked gel-matrix polymer electrolytes exhibiting measured capacitance values more than 100 times those of conventional electrolytes. The new gel electrolytes are compatible with all normal production electrodes.

Augmented Optics, which has formed a subsidiary, SuperCapacitor Materials, to commercialize the materials, believes that the combination of existing electrodes and the new electrolytes have the potential to create supercapacitors that have energy storage capacities which can approach or exceed existing battery systems.

More... | Comments (11)

Lucid Motors and Samsung SDI in strategic partnership on next-gen lithium-ion cells

Samsung SDI and luxury EV startup Lucid Motors have entered a strategic partnership for battery cell supply. Samsung SDI will be a major supplier of lithium-ion cells for Lucid’s first vehicle, an electric executive sedan scheduled to begin production in late 2018.

Samsung SDI and Lucid have collaborated to develop next-generation cylindrical cells that are able to exceed current performance benchmarks in areas such as energy density, power, calendar life and safety. Significantly, this jointly developed cell also achieves breakthrough tolerance to repeated fast charging.

More... | Comments (20)

Nikola Motor unveils prototype Class 8 fuel cell range-extended electric truck, plans for H2 fueling network

December 06, 2016

At an event at its Salt Lake City headquarters last week, startup Nikola Motor Company (NMC) unveiled the first public prototype of its Nikola One Class 8 hydrogen fuel cell range-extended electric truck, as well as renderings of the Nikola Two Class 8 day cab version. The company also announced its plan for a network of 364 hydrogen fueling stations across the US and Canada (Nikola is bundling fuel with the truck), and unveiled a 107 kWh battery pack for the Nikola Zero UTV along with a business plan to sell packs to OEMs.

The Nikola One utilizes a fully electric drivetrain featuring a 320 kWh Li-ion battery pack (32,000 cells) and a nearly 300 kW fuel cell stack powering a 6x4 four-wheel electric drive (four 800V AC motors) with torque vectoring. Delivering more than 1,000 hp (746 kW) and 2,000 lb-ft of torque, the Nikola One will have an expected range of 800-1,200 miles, the company said.

More... | Comments (20)

UT Austin team uses polypyrrole-MnO2 coaxial nanotubes as sulfur host to improve performance of Li−sulfur battery

December 05, 2016

Researchers at the University of Texas at Austin have developed a novel electrode for lithium-sulfur batteries that improves cyclic stability and rate capability significantly. In a paper published in the ACS journal Nano Letters, they report using polypyrrole-MnO2 coaxial nanotubes to encapsulate sulfur. MnO2 restrains the shuttle effect of polysulfides greatly through chemisorption and the polypyrrole serves as conductive frameworks.

They report a stable Coulombic efficiency of ∼98.6% and a decay rate of 0.07% per cycle with 500 cycles at 1C-rate with the S/PPy-MnO2 ternary electrodes with 70 wt % sulfur and 5 wt % of MnO2. The ternary electrodes have an initial high rate of 1420 milliampere-hours per gram (mAh/g) at 0.2 C and deliver 985 mAh/g after 200 cycles.

More... | Comments (1)

Nissan and Eaton broaden xStorage Home energy storage portfolio; 10-year xStorage Buildings deal with Amsterdam ArenA

November 30, 2016

Nissan and power management leader Eaton are broadening their portfolio of xStorage Home residential energy storage solutions—which can use second-life EV batteries—by introducing a range of six product configurations, giving consumers greater choice to meet their energy needs. This announcement comes as pre-orders of xStorage Home begin today in the United Kingdom, Norway and Germany with other European markets to follow in the coming months.

Nissan and Eaton also announced a 10-year deal with Amsterdam ArenA—home of Ajax Football Club and world-famous entertainment venue—to provide back-up power to the arena from second-life Nissan LEAF batteries. The 55,000-seat stadium has hosted numerous high profile concerts and sporting events over the years.

More... | Comments (1)

Stanford team uses battery electrode materials to boost platinum catalytic performance for fuel cells

November 25, 2016

A team at Stanford University has developed a method for using battery electrode materials directly and continuously to control the lattice strain of a platinum (Pt) catalyst, thereby boosting catalytic activity for the oxygen reduction reaction (ORR) in fuel cells by up to nearly 90%. A paper on their work is published in Science.

Modifying the electronic structure of catalysts can improve their performance; lattice strain (either compressive or tensile) modifies the distances between surface atoms and hence modifies catalytic activity. However, the common approach of using metal overlayers to induce strain has some control issues, such as introducing ligand effects.

More... | Comments (7)

Saint Jean Carbon building a high performance lithium-ion battery with recycled/upcycled material

Saint Jean Carbon Inc., a carbon science company engaged in the design and build of energy storage carbon materials, and a battery manufacturing partner will build a high-powered full-scale lithium-ion battery with recycled/upcycled material from an electric car power pack and upcycled anode material from Saint Jean Carbon.

Saint John said that this project—a first—is intended to provide results showing that the battery materials can be re-used over and over again, greatly reducing the demand for continued mining and helping the environment significantly. The project will take a three-stage approach:

More... | Comments (3)

Toyota develops method to observe behavior of Li ions in electrolyte; expected contributions to battery performance & durability

November 24, 2016

Toyota Motor’s Central R&D Labs, along with Nippon Soken and four universities (Hokkaido, Tohoku, Kyoto, and Ritsumeikan) has developed the first method for observing the real-time behavior of lithium ions (Li-ions) in an electrolyte as a Li-ion battery charges and discharges. The researchers will present a paper on this method, results and the implications for battery design at the 57th Battery Symposium in Japan next week.

Toyota believes that this method—which combines high-intensity X-ray (synchrotron radiation) for high speed measurement at high resolution with a special, easy-to-observe electrolyte—will provide essential guidelines for R&D that aims to improve the performance and durability of batteries, which would lead to longer battery life, as well as longer driving ranges for plug-in hybrid vehicles (PHVs) and electric vehicles (EVs).

More... | Comments (5)

DOE awards $1.1M to Penn State project to develop protective, self-healing layers for Li metal anodes

November 23, 2016

The US Department of Energy Vehicle Technologies Office has awarded Donghai Wang, associate professor of mechanical engineering at Penn State, a $1.1-million grant to develop a new lithium-ion conductor for the protection of lithium metal used in next-generation battery technologies for electric vehicles. (Earlier post.)

With the new funding, Wang, who leads the Energy Nanostructure Laboratory at Penn State, and his team will use very thin layers of nanostructured hybrid (organic-inorganic—i.e., organo-LixSy and organo-LixPySz) materials to suppress the formation of dendrites on lithium metal anodes. The overall goal is to develop protective, self-healing layers for Li-metal anodes that will allow high cycling efficiency (> 99.7%) and dendrite-free cycling.

More... | Comments (0)

Some Volkswagen strategists see battery-electric, diesel cost lines crossing by 2023-2025; TRANSFORM 2025+

November 22, 2016

The increasing stringency of global emissions standards, both current and projected, is driving up the cost for internal combustion engines to meet those standards, although numerous technology pathways exist. (Earlier post.)

In a conversation with Green Car Congress at AutoMobility LA last week, Dr. Matthias Erb, Executive Vice President of the NA Engineering and Planning Center, Volkswagen Group of America, said that, as a result of those pressures, some strategists in the Volkswagen Group project that the cost lines between battery-electric vehicles and diesel will cross within the coming decade.

More... | Comments (23)

Volkswagen & BASF “Science Award Electrochemistry” to Dr. William Chueh from Stanford; special prize to Dr. Martin Ebner from ETH University Zurich

The Volkswagen and BASF international “Science Award Electrochemistry 2016” goes to Dr. William Chueh from Stanford University. The jury of representatives from BASF, Volkswagen and from academia selected him for his outstanding research results in the area of energy storage and conversion.

Dr. William C. Chueh is assistant professor at the Department of Materials Science & Engineering and Center Fellow at the Precourt Institute for Energy. He has attained a new level of understanding for diverse fundamental battery dynamics which limit battery rate capability and life cycle. His insights are paving the way for further improving lithium-ion batteries and significantly enhancing their performance. (Earlier post.)

More... | Comments (2)

Leclanché and Narada Power sign strategic global alliance for Li-ion technology

November 21, 2016

Swiss battery manufacturer Leclanché SA (earlier post) and China-based Zhejiang Narada Power Source Co Ltd, a global battery manufacturer, announced a strategic partnership for the manufacturing and development of lithium-ion battery technology for the Chinese and global markets.

Leclanché will support Narada with technology transfer to achieve low-cost, scale manufacturing of Leclanché’s proprietary high-cycling and fast-charging lithium titanate (LTO) and high energy density graphite nickel manganese cobalt (G-NMC) battery storage technologies.

More... | Comments (1)

CMU team details impact of regional and drive-cycle variations on degradation of a PHEV battery pack

November 20, 2016

A team at Carnegie Mellon University (CMU) led by Dr. Jeremy Michalek has investigated the implications of regional and drive cycle variations on the degradation of a plug-in hybrid electric (PHEV) battery. Modeling a PHEV with an air-cooled battery pack comprising cylindrical LiFePO4/graphite cells, they simulated the effect of thermal management, driving conditions, regional climate, and vehicle system design on battery life.

In their paper, published in the Journal of Power Sources, they reported that in the absence of thermal management, aggressive driving can cut battery life by two-thirds; a blended gas/electric-operation control strategy can quadruple battery life relative to an all-electric control strategy; larger battery packs can extend life by an order of magnitude relative to small packs used for all-electric operation; and batteries last 73–94% longer in mild-weather San Francisco than in hot Phoenix.

More... | Comments (3)

Volkswagen investing €3.5B in German plants for e-mobility and digitalization; MEB production, pilot plant for batteries and modules

November 18, 2016

Volkswagen will invest €3.5-billion (US$3.7-billion) investment in the future-oriented areas of e-mobility and digitalization for its German plants. As part of an agreement with its General Works Council (i.e., labor), the Board of Management announced that the Volkswagen brand’s German plants will develop and produce electric vehicles and components based on the Modular Electric Drive Kit (MEB). (Earlier post.)

The MEB is the foundation for an entirely new generation of long-range battery-electric vehicles that will be connected, autonomous, open and priced for the volume market as required by Volkswagen’s positioning. The first production MEB vehicle, a version of the I.D. concept shown this year at the Paris show (earlier post), will—with a range of up to 373 miles and a market introduction in 2020—be priced approximately at the level of a diesel Golf, before any subsidies.

More... | Comments (0)

DOE to issue $47M FY17 Vehicle Technologies program-wide funding opportunity

November 17, 2016

The US Department of Energy (DOE) will soon issue its FY17 Vehicle Technologies Program Wide Funding Opportunity Announcement (DE-FOA-0001701). The FOA will have estimated funding of $47,150,000; DOE expects to post the full announcement (DE-FOA-0001629) in December.

DOE’s Vehicle Technologies Office supports a broad technology portfolio of advanced highway transportation technologies. Research, development, and deployment efforts are focused on reducing the cost and improving the performance of a mix of near- and long-term vehicle technologies including advanced batteries, power electronics and electric motors, lightweight and propulsion materials, advanced combustion engines, advanced fuels and lubricants, and other enabling technologies. The upcoming FOA may include the following areas of interest (AOI):

More... | Comments (0)

Brown team creates patterned metal-oxide films using GO template; 4x charge-carrying capacity in Mn2O3

November 10, 2016

Researchers from Brown University have developed a new method for making ultrathin metal-oxide sheets containing intricate wrinkle and crumple patterns by transferring those patters from graphene oxide templates. In a study published in the journal ACS Nano, the researchers show that the resulting textured metal-oxide films have better performance when used as photocatalysts and as battery electrodes.

The new findings build on previous work done by the same research group in which they developed a method for introducing finely tuned wrinkle and crumple textures into sheets of the nanomaterial graphene oxide (GO). The study showed that the process enhanced some of graphene’s properties. The textures made the graphene better able to repel water, which would be useful in making water-resistant coatings, and enhanced graphene’s ability to conduct electricity.

More... | Comments (1)

DOE FY17 SBIR Phase I Release 2 topics include fuel cells, EV batteries, engines

November 08, 2016

The US Department of Energy (DOE) has announced the 2017 Small Business Innovation Research and Small Business Technology Transfer (SBIR/STTR) Phase I Release 2 topics, including three subtopics focused on hydrogen and fuel cell technologies. The fuel cell subtopics include innovative materials for bipolar plates; liquid organic hydrogen carriers; and emergency hydrogen refuelers.

The Phase I Release 2 topics also include four vehicle subtopics, including electric drive vehicle batteries; SiC device qualification for electric drive vehicle power electronics; fuel efficiency improvement technologies for conventional stoichiometric gasoline direct injection multi-cylinder internal combustion engines; and wide-range high-boost turbocharging system. Further, a technology transfer opportunity is the use of a new Argonne catalyst for reducing NOx.

More... | Comments (1)

Nikkei: Toyota to begin mass-producing 300+ km BEV by 2020

November 07, 2016

Without citing sources, the Nikkei reported that Toyota Motor intends to start mass-producing battery-electric vehicles capable of a range of more than 300 km (186 miles) on a single charge by 2020. According to the report, the platform underlying the Prius or Corolla is being considered for an electric SUV.

Up to now, Toyota has envisioned using all battery-electric powertrains mainly in short-distance, urban applications; longer-range electric operation was to be handled by fuel cell vehicles. With GM readying the release of the 383 km (238-mile) Chevy Bolt for this year, Tesla plowing ahead for a release of the Model 3 next year, and other rivals such as Volkswagen accelerating their long-range EV efforts, however, Toyota apparently is broadening its strategy.

More... | Comments (18)

Cummins working on two medium- and heavy-duty PHEV projects; Class 6 truck, Class 7 and 8 buses

November 03, 2016

At the SAE 2016 Range Extenders for Electric Vehicles Symposium this week in Knoxville, Gary Parker, Director of Electromobility programs for Cummins, Inc. outlined two of the plug-in hybrid projects in which the engine manufacturer is currently involved.

The first project, in partnership with the Ohio State University, PACCAR, NREL and Argonne National Laboratory and funded with $4.5 million from the DOE, is to develop a Class 6 commercial plug-in hybrid electric vehicle that can reduce fuel consumption by at least 50% over conventional Class 6 vehicles. (Earlier post.)

More... | Comments (2)

Nissan introduces series-hybrid powertrain with Note e-POWER in Japan; small pack, small engine, LEAF motor, low price

November 02, 2016

In Japan, Nissan Motor introduced its new series-hybrid drive system called e-POWER along with its application in the Note. This marks the first availability of e-POWER technology for consumers, marking a milestone in the electrification strategy under Nissan Intelligent Mobility.

e-POWER borrows from the EV technology in the Nissan LEAF. Unlike the all-battery-electric powertrain of the LEAF, e-POWER adds a small gasoline engine to charge the high-output battery when necessary, eliminating the need for an external charger while offering the same high-output. Nissan says that although e-POWER uses a much smaller battery than the LEAF (1.5 kWh vs 30 kWh), it delivers the same driving experience as a full EV.

More... | Comments (39)

Maxwell Technologies delivers first commercial application of Li-ion capacitor technology with CRRC-SRI in China

November 01, 2016

Maxwell Technologies, Inc., a leading developer and manufacturer of ultracapacitor-based energy storage and power delivery solutions, announced the first commercial application of lithium-ion capacitors, developed in conjunction with China Railway Rolling Stock Corporation (CRRC-SRI), China’s largest rail manufacturer. (Earlier post.)

The technology will be used for rapid energy regeneration in the trolley system in the capital city of Hunan province in China. Following last year’s announcement of Maxwell’s strategic partnership with CRRC-SRI to collaborate on developing next-generation capacitive energy storage solutions, this project is the first to leverage Maxwell’s new lithium-ion technology and validates its unique value proposition for rail applications.

More... | Comments (15)

Aqua Metals produces first AquaRefined lead at first AquaRefinery; tests 99.99% pure

Aqua Metals has produced the first AquaRefined lead at its AquaRefinery in McCarran, Nevada. AquaRefining is a water-based, room-temperature process that is the only clean lead recycling method for lead-acid batteries (LAB). (Earlier post.)

Through its own on-site assay, Aqua Metals has verified that the lead produced in the AquaRefining module is more than 99.99% pure. The company will send its initial production samples to several US battery manufacturing companies—which collectively represent more than 50% of US battery production—to allow them to conduct their own assays.

More... | Comments (0)

New interfacial architecture enables high-energy solid-state Li battery with long cycle life

October 27, 2016

Researchers led by a team from Ningbo Institute of Materials Technology and Engineering in China has developed ultrastable all-solid-state lithium batteries (421 mAh g−1 at 1.27 mA cm−2 after 1000 cycles) with high energy and power densities of 360 Wh kg−1 and 3823 W kg−1 at current densities of 0.13 and 12.73 mA cm−2, respectively. A paper on their work is published in the ACS journal Nano Letters.

To achieve their results, the researchers developed a new interfacial architecture. The researchers say that their design approach can be used as a generic route for synthesizing other sulfur-based or transitional metal sulfides−sulfide electrolyte composites for all-solid-state lithium batteries.

More... | Comments (6)

Columbia team develops new prelithiation method to increase Li-ion battery energy density by 10-30%

October 24, 2016

A team at Columbia University, with colleagues from Institute Recherche d’Hydro-Québec (IREQ), has developed a new pre-lithiation method to increase the energy density of lithium (Li-ion) batteries by utilizing a trilayer structure that is stable even in ambient air. This makes the battery both longer lasting and cheaper to manufacture. The work, which may improve the energy density of lithium batteries by 10-30%, is published in the ACS journal Nano Letters.

Li-ion batteries are produced in a discharged state; however, a considerable amount of active Li+ ions are lost during the initial charge due to the formation of the solid electrolyte interphase (SEI) on the anode surface. This results in a low initial coulombic efficiency and lowers the energy density of full cells. This step is even more critical in nanostructured anodes with high specific capacity, such as Si and Sn, due to their high surface area and large volume change.

More... | Comments (3)

Daimler subsidiary ACCUMOTIVE begins construction of second Li-ion factory; batteries for 1st EQ model, 48V systems

Daimler subsidiary ACCUMOTIVE has begun construction of a second Li-ion battery factory at its site in Kamenz. With an investment of about €500 million (US$545 million), the site in Kamenz will be one of the biggest and most modern battery factories in Europe.

The new production facility is planned to start operations in the middle of 2018. The area of about 20 hectares is located in immediate proximity of the existing battery factory in Kamenz, about 50 kilometers from Dresden. With the construction of the second facility, the production and logistics area will be quadrupled to about 80,000 square meters. The workforce will double by the end of this decade.

More... | Comments (0)

U-M team uses new technique to provide in-depth understanding of dendrite growth on Li metal anodes

October 19, 2016

A team at the University of Michigan (U-M) has used operando video microscopy to develop a comprehensive understanding of the voltage variations observed during Li metal cycling, which is directly correlated to dendrite growth. Specifically, they observed the evolution of the morphology of the Li electrode through operando high-resolution video capture, and directly correlated the morphology to time synchronized voltage traces.

They then developed a model to relate electrode morphology and competing electrochemical kinetics to cell voltage. This allowed for an in-depth understanding of the electrochemical processes occurring. This work, published in an open-access paper in ACS Central Science, provides a level of detailed understanding that can help researchers take the next steps toward bringing Li metal anodes to commercial reality.

More... | Comments (1)

Ube Industries and Mitsubishi Chemical to form 50-50 Li-ion battery electrolyte JV in China

October 18, 2016

Ube Industries, Ltd. and Mitsubishi Chemical Corporation have agreed to a tie-up for their electrolyte businesses in China under a 50-50 joint venture to supply highly competitive electrolyte to the market. The JV will enable the two companies to combine their production technologies and mutually to use their technology resources including intellectual property, in order to enhance their technologies and cost competitiveness.

Ube Industries and Mitsubishi Chemical will apply for approval from government authorities in China and other relevant countries. Upon securing the necessary approvals, the two companies will shift their electrolyte businesses in China to a joint operation in April 2017.

More... | Comments (0)

24M delivers initial quantity of production-size semi-solid Lithium-ion cells to NEC Energy Solutions

October 12, 2016

On schedule, 24M has successfully delivered an initial quantity of production-size battery cells to NEC Energy Solutions, Inc. (NEC ES), meeting the terms of the Memorandum of Understanding (MoU) the two companies signed last year at this time. (Earlier post.)

24M is leveraging existing, preferred energy storage chemistry but using a new cell design with semi-solid (a mixture of solid and liquid phases) thick electrodes and manufacturing innovations to deliver what it says will be up to a 50% reduction in current Li-ion costs.

More... | Comments (12)

Maxwell Technologies unveils 51-Volt ultracapacitor module for hybrid buses

Maxwell Technologies, a leading developer and manufacturer of ultracapacitor-based energy storage and power delivery solutions, has introduced a 51-volt (51V) module, the newest addition to its ultracapacitor product offerings for rugged applications. The 51V module uses Maxwell’s leading 2.85V, 3,400-farad (F) ultracapacitor cell to deliver the company’s highest available energy and power density.

As durable and efficient energy storage solutions are in strong market demand, Maxwell’s 51V module provides a self-cooling system solution that helps to optimize the performance of hybrid buses and other high-duty cycle applications.

More... | Comments (3)

MIT team develops first supercapacitor made entirely from neat MOFs, without conductive additives or binders

October 11, 2016

Researchers at MIT have shown that a MOF (metal-organic framework) with high electrical conductivity—Ni3(2,3,6,7,10,11-hexaiminotriphenylene)2 (Ni3(HITP)2)—can serve as the sole electrode material in a supercapacitor. This is the first example of a supercapacitor made entirely from neat MOFs as active materials, without conductive additives or other binders.

The MOF-based device shows an areal capacitance that exceeds those of most carbon-based materials and capacity retention greater than 90% over 10,000 cycles, in line with commercial devices. Given the established structural and compositional tunability of MOFs, these results herald the advent of a new generation of supercapacitors whose active electrode materials can be tuned rationally, at the molecular level, the researchers suggested. A paper on their work is published in the journal Nature Materials.

More... | Comments (0)

Report: Honda and Saitec develop practical Mg-ion battery with vanadium oxide cathode; commercialization by 2018

October 10, 2016

The Nikkei, citing unnamed sources, reports that R&D organization Saitec (Saitama Industrial Technology Center) and Honda Motor have developed a practical magnesium-ion rechargeable battery and hope to commercialize it. Saitec reportedly led the development; Honda R&D assessed the technology’s viability. The two are slated to announce the battery next month.

Because magnesium is divalent, it can displace double the charge per ion (i.e., Mg2+ rather than Li+). As an element, magnesium is much more abundant than lithium, and more stable. Magnesium-ion batteries theoretically could offer good electrochemical performance, while being safer and less expensive than Li-ion batteries. Toyota has been looking into Mg-ion systems for a number of years (earlier post). However, Mg-ion batteries have suffered from a number of limitations, resulting in rapid degradation of performance.

More... | Comments (1)

Sulfur-loaded carbon aerogel as cathode for Li-S battery offers improved cyclic stability

Researchers at South China Normal University in Guangzhou have developed a novel composite of sulfur loaded in micropore-rich carbon aerogel (CA-S) for use as a cathode in Li-sulfur batteries.

Compared to sulfur loaded in a common carbon material, acetylene black (AB-S), the CA-S exhibited significantly improved cyclic stability and rate capability. The CA is micropore-rich with micropore volume over 66% of total pore volume. In a paper in the Journal of Power Sources, and team attributed the improved performance of CA-S to the confinement of the micropores in CA to small sulfur allotropes and corresponding lithium sulfides.

More... | Comments (2)

Volkswagen’s MEB for EVs: long electric range, open-platform, open-space, pricing for the volume market; “tablet on wheels”

October 05, 2016

Brands within the Volkswagen Group have been rolling out modular component matrices, or assembly toolkits, for their light-duty vehicles over the past few years. Until recently, the four main modular toolkits (modularen Baukästen) of the Group were: the MQB (transverse, driven by the Volkswagen brand); the MLB (longitudinal, driven by the Audi brand); the MSB (standard drive, driven by Porsche); and the NSF (New Small Family).

Development work on these continues; Audi, for example, is refining MLB evo—the second-generation of MLB and the foundation for the battery-electric e-tron quattro SUV due out in 2018. (Earlier post.) These four main kits are now joined by the all-new Modularer Elektrifizierungsbaukasten (“Modular Electric Drive kit”, or MEB), being developed by the Volkswagen brand. The MEB will be the foundation for an entirely new generation of battery-electric vehicles designed not only to be electric and feature extended range, but to be connected, autonomous, open and priced for the volume market as required by Volkswagen’s positioning.

More... | Comments (1)

CCM: demand for ternary Li-ion batteries in China to more than double to 10 GWh in 2016 from 4.4GWh in 2015 due to subsidy fraud and response

In the wake of the news that five alternative energy vehicle (AEV) makers defrauded the Chinese government of about US$150 million in subsidies, the Chinese government adjusted its subsidy policies for alternative energy vehicles. Market analyst CCM believes that the adjustment will change the market structure and that ternary Li-ion power batteries—i.e., Li-ion batteries with ternary cathode materials such as LMO, NCM/NCA, LFP, etc.—will be the biggest gainers.

The firm forecasts an immediate boom in demand for ternary Li-ion batteries—mainly used to power alternative energy vehicles—from 4.4GWh in 2015 to 10 GWh in 2016.

More... | Comments (1)

LG Chem to supply Li-ion cells to Faraday Future; targeting highest energy density production cell for automotive battery

October 04, 2016

Faraday Future (FF) announced a partnership with LG Chem to supply lithium-ion cells for FF’s electric vehicles. The partnership also represents a joint commitment between both companies to collaborate on the development of EV battery technology, resulting in the world’s highest energy density for a production automotive battery.

These cells will be incorporated into Faraday Future’s VPA platform, the company’s universal and scalable modular battery structure that supports the development of a range of vehicles. The VPA platform is a critical component to Faraday Future’s future product portfolio.

More... | Comments (8)

Sion Power reports 400 Wh/kg, 700 Wh/L and 350 cycles under 1C for Li-ion battery with Li-metal anode technology

October 03, 2016

Sion Power reported that a Licerion-Ion system has achieved 400 Wh/kg, 700 Wh/L and 350 cycles under 1C discharge conditions. Dr. Yuriy Mikhaylik, Sion Power’s Director of Materials, is presenting details on this performance in an invited presentation at the ECS meeting in Honolulu this week.

Licerion, a product of Sion Power’s technical collaboration with BASF (earlier post), is a comprehensive battery system that significantly enhances the energy and cycle life of rechargeable batteries using a physically protected metallic lithium anode. The physical protection is based on ceramic-polymer composite membranes and is combined with specialized cell design and electrolyte systems providing smooth, dendrite-free lithium deposition and chemical protection of the exposed metallic lithium surface. This approach addresses the safety and cycle life problems that have historically plagued lithium-metal electrodes.

More... | Comments (12)

Ube to expand production capacity for Li-ion battery separators; used in batteries in Gen 4 Prius

October 01, 2016

Ube Industries, Ltd. will expand its production capacity for its U-Pore polyolefin multiparous film for lithium-ion battery separators at the Sakai Factory in Sakai City, Osaka Prefecture, in order to meet growing demand for lithium-ion batteries used in automobiles.

UPORE has a uniform microporous structure, developed using UBE’s proprietary technology, and comes in either single or multi-layer membranes. UPORE is manufactured using an environmentally friendly dry process (lamellar crystal stretching) that does not use solvents or inorganic fillers. The use of polypropylene and polyethylene layers delivers low-temperature shutdown and high-temperature heat resistance. A uniaxial stretching method is used, resulting in no traverse direction shrinkage. Membrane thickness and permeability can be modified as required by customers.

More... | Comments (1)

Renault boosts range of ZOE EV to 400 km with new 41 kWh pack option

September 29, 2016

At the Paris Motor Show, Renault introduced its enhanced-range ZOE electric vehicle. Equipped with the new 41 kWh Z.E. 40 battery, ZOE now has a range of up to 400 km (249 miles) NEDC—twice the distance of the original launch version of the ZOE. At the same, ZOE owners can benefit from a range of new connected services and equipment upgrades. Order books for the new ZOE line-up are open. The new ZOEs fitted with the new Z.E. 40 battery are made at Renault’s Flins plant in France and will be available for delivery before the end of the year.

Renault said that new Z.E. 40 battery delivers a real-world range of 300 kilometers (186 miles) in urban or suburban areas. (The ranges are for ZOEs equipped with either the 75- or 90-horsepower version of the standard R75/90 motor, previously known as the R240 (earlier post). The figure used for this motor’s name now refers to the power output instead of the NEDC range as was previously the case. The R90 motor is available for all versions of the ZOE, with the exception of the French market’s entry level version which features the R75 motor.)

More... | Comments (24)

New high-performance foldable cathode for Li-S batteries based on 3D activated carbon fiber matrix

September 28, 2016

A team at Sun Yat-sen University in China has developed new high-performance, stable cathode for Li-S batteries consisting of a 3D activated carbon fiber matrix (ACFC) and sulfur.

The structured 3D foldable sulfur cathode (ACFC-S) delivers a reversible capacity of about 979 mAh g−1 at 0.2C; a capacity retention of 98% after 100 cycles; and 0.02% capacity attenuation per cycle. Even at an areal capacity of 6 mAh cm−2—2 times higher than the values of Li-ion batteries—it still maintains an excellent rate capability and cycling performance. An open access paper on their work is published in Scientific Reports.

More... | Comments (6)

BioSolar begins development of high-energy anode technology

BioSolar, a developer of energy storage technology and materials, has begun development of a high energy anode for current- and next-generation lithium batteries. While this anode is an independent technology, the Company will seek synergies with the Super Cathode technology it has been developing. (Earlier post.)

BioSolar’s cathode technology, which has been the primary focus of its university-led research and development efforts, is a novel conductive polymer material that leverages fast redox-reaction properties rather than conventional lithium-ion intercalation chemistry to enable rapid charge and discharge. In contrast, BioSolar’s new anode technology is compatible with existing lithium-ion intercalation chemistries.

More... | Comments (1)

Vattenfall, BMW and Bosch test second-life EV battery electricity storage in Hamburg for grid stabilization

September 23, 2016

Vattenfall, BMW and Bosch are testing the use of second-life EV batteries in a 2 MW, 2,800 kWh energy storage system in Hamburg, Germany, to keep the electricity grid stable.

The electricity storage facility comprises 2,600 battery modules from more than 100 electric vehicles. It could supply electricity to an average two-person household for seven months. However, the stored energy is not intended for general supply, but instead is sold on the primary control reserve market by Vattenfall, along with power from other flexibly controllable facilities. The storage facility delivers primary control reserve power necessary to keep the 50 Hz grid frequency stable. Primary control reserve power must be available within a few seconds.

More... | Comments (0)

Lead-acid battery companies join forces with Argonne to enhance battery performance

September 20, 2016

Exploring the unrealized potential of lead batteries is the goal of a new collaboration between the US Department of Energy’s Argonne National Laboratory and two leading lead recycling and lead battery manufacturing companies: RSR Technologies and East Penn Manufacturing.

The collaboration will enable RSR and East Penn to use Argonne‘s state-of-the-art analytic technologies to accelerate the research of lead batteries in order to enhance performance. Tests undertaken will investigate the fundamental transport processes in lead batteries using a variety of characterization techniques available at Argonne.

More... | Comments (6)

UNIST/Stanford team develops new Li-ion anode with silicon-nanolayer-embedded graphite/carbon; 1,043 Wh/l full LiCoO2 cell

September 19, 2016

Researchers affiliated with Ulsan National Institute of Science and Technology (UNIST), South Korea, and Stanford University have demonstrated the feasibility of a next-generation hybrid anode for high-capacity Li-on batteries using silicon-nanolayer-embedded graphite/carbon.

This architecture allows compatibility between silicon and natural graphite and addresses the issues of severe side reactions caused by structural failure of crumbled graphite dust and uncombined residue of silicon particles by conventional mechanical milling. A paper describing the work is published in the journal Nature Energy.

More... | Comments (1)

Ilika to work with Johnson Matthey on 3-year project to develop protected anodes for Li-S batteries

September 18, 2016

UK-based materials company Ilika, also a developer of solid-state batteries, is taking part in a three-year project to develop protected anodes for lithium sulfur batteries, led by Johnson Matthey Plc and supported by Innovate UK and the Engineering and Physical Sciences Research Council (EPSRC). £365,133 (US$475,000) of the grant will be used to fund project activities at Ilika.

This project will develop an innovative approach to protected lithium anodes, via Ilika’s high-throughput materials development technique, to discover new electrolyte composition options and fabricate a free-standing, lithium-containing protected anode/separator for integration into pouch cells.

More... | Comments (0)

24M and partners awarded $3.5M from ARPA-E to develop ultra-high-energy density batteries with new lithium-metal anodes

September 16, 2016

As part of its new IONICS (Integration and Optimization of Novel Ion Conducting Solids) program awards (earlier post), the US Department of Energy’s Advanced Research Projects Agency-Energy (ARPA-E) awarded $3.5 million in funding to a team that includes 24M, Sepion Technologies, Berkeley Lab, and Carnegie Mellon University. The funds will be used to develop novel membranes and lithium-metal anodes for the next generation of high-energy-density, low-cost batteries.

24M’s core technology is semi-solid lithium-ion, a new class of lithium-ion batteries that will be initially deployed in stationary storage. With this ARPA-E program, 24M and its partners will extend the capabilities of semi-solid electrodes to ultra-high-energy density cells that use lithium-metal anodes.

More... | Comments (13)

ARPA-E awards $37M for IONICS projects; improving solid-state batteries and fuel cells

September 14, 2016

The US Department of Energy (DOE) Advanced Research Projects Agency-Energy (ARPA-E) announced $37 million in funding for 16 innovative new projects as part of a new ARPA-E program: Integration and Optimization of Novel Ion-Conducting Solids (IONICS). IONICS project teams are paving the way for technologies that overcome the limitations of current battery and fuel cell products.

By creating high performance parts built with solid ion conductors—solids in which ions can be mobile and store energy—the IONICS program will focus on new ways to process and integrate these parts into devices with the goal of accelerating their commercial deployment. In particular, IONICS projects will work to improve energy storage and conversion technologies in three categories: transportation batteries, grid-level storage, and fuel cells.

More... | Comments (1)

World’s largest 2nd-use battery storage starting up; Daimler, Mobility House, GETEC

September 13, 2016

The world’s largest 2nd-use battery storage is starting up. The 13 MWh project is now nearing completion after a construction time of just under one year; a total of 1,000 battery systems from second-generation smart fortwo electric drive cars are being grouped into a battery storage in Lünen, Westphalia. Partners in the project are Daimler AG, The Mobility House AG and GETEC.

The first power units are already in the grid. The 13 MWh battery storage will put its full capacity at the disposal of the German energy market before the end of this year. The output will be available to the winner of the weekly auctions among the network operators for primary controlling power range, with fully automatic energy storage and feed-in.

More... | Comments (8)

A123 collaborating with Argonne on new Li-ion NMC cathode targeting EV applications

September 10, 2016

A123 Systems LLC, a developer and manufacturer of advanced lithium-ion batteries and systems, will collaborate with Argonne National Laboratory on an advanced nickel manganese cobalt oxide (NMC) cathode development program that results in safe lithium-ion batteries with high energy densities and long lifetimes.

The three-year, multi-million dollar agreement between A123 Systems and Argonne National Laboratory will focus on improving the cathode safety without compromising cell energy density or battery life. With A123 playing the lead role, the two organizations will produce a safe class of advanced cathode materials for use in transportation applications that require substantial improvements in electric driving range.

More... | Comments (4)

XALT Energy introduces high-performance lithium titanate cell technology; electric bus applications

XALT Energy has introduced a high-performance Lithium Titanium Oxide (LTO) cell that it says has achieved better cycle life performance over a wider range of operating conditions than any lithium-ion cell ever built.

XALT pairs the LTO anode with an NMC cathode in a prismatic, stacked parallel plate electrode design offering greater reliability, safety, life and fast charge capability. The 60 Ah, 2.2 V cell features high power capability (5C/10C), a wide operating range (-40 °C to +55 °C), low impedance and heat generation, and is capable of a less than 10-minute fast charge.

More... | Comments (6)

Dalhousie team explores impact of different electrolyte solvents and electrolyte additives on high-voltage Li-ion cells

September 09, 2016

One pragmatic approach to delivering the high energy-density Li-ion batteries required for longer EV range is to boost the operating voltage of batteries above the current ~4 volts. However, the performance of some higher voltage electrode materials is poor in conventional carbonate-based electrolytes due to increased electrolyte oxidation at high positive potentials, leading to cell failure stemming from gas generation and impedance growth.

As a result, successfully operating higher voltage Li-ion cells may require a combination of new electrolyte solvents, electrolyte additives as well as surface coatings. A team at Dalhousie University (Canada) led by Professor Jeff Dahn has explored the impact of different electrolyte solvents and electrolyte additives in high-voltage coated and uncoated NMC442 (LiNi0.4Mn0.4Co0.2O2)/graphite cells and compared them head-to-head using an automatic storage system (up to 4.7 V) and automated EIS/cycling measurements (up to 4.5 V). A paper detailing their findings is published in the Journal of Power Sources.

More... | Comments (0)

Fuji Pigment synthesizing ionic liquids for Al-air battery electrolytes, Li-ion electrolytes and other applications

September 08, 2016

Fuji Pigment Co., Ltd. is synthesizing ionic liquids for a range of applications, including its own aluminum-air battery, currently under development (earlier post); electrolytes for Li-ion batteries; and solvents for cellulose nanofibers.

Ionic liquids are chemical compounds composed of organic cations such as imidazolium ions and pyridinium ions, and anions such as bromide, fluoride, and chloride. Various ionic liquids with different properties can be created by combining different cations and anions. The unlimited number of ion combinations for their synthesis leads to numerous different ionic liquids that can be created. So far, Fuji Pigment has synthesized imidazolium-, chloride-, and bromide-based ionic liquids, with a number of other ionic liquids currently under development. The company can synthesize most ionic liquids at a customer’s request.

More... | Comments (1)

MIT team discovers two mechanisms at work in Li dendrite formation

September 02, 2016

Researchers at MIT have carried out the most detailed analysis yet of lithium dendrite formation from lithium anodes in batteries and have found that there are two entirely different mechanisms at work. While both forms of deposits are composed of lithium filaments, the way they grow depends on the applied current.

Clustered, “mossy” deposits, which form at low rates, turn out to grow from their roots and can be relatively easy to control. More sparse and rapidly advancing “dendritic” projections grow only at their tips. The dendritic type, the researchers say, are harder to deal with and are responsible for most of the problems dendrites cause: degraded performance and short-circuits that damage or disable the battery. Their findings are reported in an open-access paper in the RSC journal Energy and Environmental Science.

More... | Comments (0)

Berkeley Lab team directly probes solid/liquid interface of electrochemical double layer

September 01, 2016

Researchers at the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) have directly probed the solid/liquid interface of the electrochemical double layer (EDL) using a novel X-ray toolkit. The X-ray tools and techniques could be extended, the researchers say, to provide new insight about battery performance and corrosion, a wide range of chemical reactions, and even biological and environmental processes that rely on similar chemistry.

Originally conceived by Hermann von Helmholtz in the 19th century, the EDL is a key concept in the modern electrochemistry of electrified interfaces. The properties of the interface formed by a charged electrode surface immersed in an electrolyte governs the charge transfer processes through the interface itself, thus influencing the electrochemical responses of the electrode/electrolyte system. These concepts and models together serve as the foundation of modern electrochemistry, the researchers noted in an open-access paper describing the work published in Nature Communications.

More... | Comments (0)

Samsung SDI building Li-ion battery plant in Hungary; global triangular production structure

August 31, 2016

Samsung SDI has decided to use Hungary as its Li-ion battery production base in Europe. The new battery plant will be built in Goed, north of Budapest in a 330,000 m2 site, using existing facilities previously used for display production. The new facility in Hungary will enable Samsung SDI to establish a global triangular production structure along with existing plants in Ulsan, Korea and Xian, China.

Aiming to start commercial production in 2nd half of 2018, the company will build production lines with annual capacity of batteries for 50,000 pure electric vehicles, investing around 400 billion won (~US$358 million).

More... | Comments (2)

DOE HPC4Mfg program funds 13 projects to advance US manufacturing; welding, Li-S batteries among projects

A US Department of Energy (DOE) program designed to spur the use of high performance supercomputers to advance US manufacturing has funded 13 new industry projects for a total of $3.8 million. Among the projects selected are one by GM and EPRI of California to improve welding techniques for automobile manufacturing and power plant builds in partnership with Oak Ridge National Laboratory (ORNL).

Another one of the 13 projects is led by Sepion Technologies, which will partner with LBNL to make new membranes to increase the lifetime of Li-S batteries for hybrid airplanes.

More... | Comments (0)

SLAC, Utrecht Univ. team visualize poisoning of FCC catalysts used in gasoline production; seeing changes in pore network materials

Merging two powerful 3-D X-ray techniques, a team of researchers from the Department of Energy’s SLAC National Accelerator Laboratory and Utrecht University in the Netherlands revealed new details of the metal poisoning process that clogs the pores of fluid catalytic cracking (FCC) catalyst particles used in gasoline production, causing them to lose effectiveness.

The team combined their data to produce a video that shows the chemistry of this aging process and takes the viewer on a virtual flight through the pores of a catalyst particle. More broadly, the approach is generally applicable and provides an unprecedented view of dynamic changes in a material’s pore space—an essential factor in the rational design of functional porous materials including those use for batteries and fuel cells. The results were published in an open access paper in Nature Communications.

More... | Comments (1)

Neah Power wins DOE award to work with Argonne to increase capacity of PowerChip Li-metal battery

August 30, 2016

Neah Power Systems, Inc., a provider of fuel cell-based power solutions and rechargeable lithium battery storage solutions for defense, commercial, and consumer applications, has won a grant from the US Department of Energy through the Small Business Vouchers Pilot Program. Neah will work with Argonne National Laboratory to increase the capacity and manufacturability of its PowerChip rechargeable lithium-metal / porous silicon battery.

The focus in this project is on characterizing the battery and performing a deconstruction analysis to determine methods to increase the energy density and / or increase the lifetime of the battery.

More... | Comments (0)

NOHMs raises $5M for commercializing non-flammable, ionic-liquid containing electrolytes for EV batteries

August 29, 2016

NOHMs Technologies Inc. (NOHMs), a Cornell University spin-out founded in 2010, raised $5 million in Series B venture capital financing to commercialize its non-flammable electric vehicle (EV) battery electrolyte technology. Phoenix Venture Partners II LP (PVP) led the round with Solvay Ventures, New York State Innovation Venture Capital Fund (NYSIVCF), and angel investors.

NOHMs Technologies has developed a family of ionic-liquid-containing electrolytes that are stable above 4.5 volts in lithium ion cells. The two electrolyte product lines currently under development for electric vehicle (EV) batteries are:

More... | Comments (2)

Silicon-iron composite material for high capacity Li-ion anodes

August 26, 2016

Researchers at Japan’s National Institute for Materials Science (NIMS) and Georgia Tech have jointly developed unique Si-iron (Fe) based nanomaterials connected by Ge nanostructures for use as a high-capacity anode material for Li-ion batteries.

As described in a paper in the journal Nano Energy, the Si-Fe based new nanostructures showa maximum capacity of about 689 mAh/g—about twice as high as conventional materials—and a long, stable cycle life.

More... | Comments (0)

Opinion: Could A Lithium Shortage De-Rail The Electric Car Boom?

by James Stafford of

We’ve gone electric, and there’s no going back at this point. Lithium is our new fuel, but like fossil fuels, the reserves we’re currently tapping into are finite—and that’s what investors can take to the bank.

You may think lithium got too popular too fast. You may suspect electric vehicles are too much buzz and not enough real future. You may, in short, be a lithium skeptic, one of many. And yet, despite this skepticism, lithium demand is rising steadily and sharply, and indications that a shortage may be looming are very real.

More... | Comments (8)

OSU smart membrane could enable new category of high-energy, high-power energy storage for EVs

August 24, 2016

A team at the Ohio State University has developed a membrane that regulates bi-directional ion transport across it as a function of its redox state and that could be used as a programmable smart membrane separator in future supercapacitors and redox flow batteries.

Described in a paper published in the RSC journal Energy & Environmental Science, the smart membrane separator could enable the design of a new category of rechargeable/refillable energy storage devices with high energy density and specific power that would overcome the contemporary limitations of electric vehicles.

More... | Comments (3)

U Florida team using fungi to extract cobalt and lithium from waste batteries

August 22, 2016

A team of researchers University of South Florida is using naturally occurring fungi to drive an environmentally friendly recycling process to extract cobalt and lithium from tons of waste batteries. The researchers presented their work at the 252nd National Meeting & Exposition of the American Chemical Society (ACS) in Philadelphia.

Although a global problem, the US leads the way as the largest generator of electronic waste. It is unclear how many electronic products are recycled. Most likely, many head to a landfill to slowly break down in the environment or go to an incinerator to be burned, generating potentially toxic air emissions.

More... | Comments (0)

TU Graz team uses monocrystalline Si as Li-ion anode; integrated micro batteries for on-board sensors

August 21, 2016

Electrochemists at TU Graz have used single crystalline acceptor-doped Si—as ubiquitously used in the semiconductor industry—as anode material for rechargeable Li-ion batteries. In an open access paper in the journal Scientific Reports, the team suggests that the use of such patterned monocrystalline Si (m-Si) anodes directly shaped out of the Si wafer is a highly attractive route to realize miniaturized, on-board fully integrated, power supplies for Si-based chips.

The microchip not only houses the electronics, but is at the same time an important part of a mini battery providing electrical energy, e.g. for sending and receiving information.

More... | Comments (0)

DOE awards $1.25M to UMERC team for self-healing 3D conformal solid-state electrolytes

August 18, 2016

The Department of Energy (DOE) has awarded $1.25M to a team of researchers at the University of Maryland Energy Research Center (UMERC) for the development of advanced high-voltage electrolytes and additives, conformable and self-healing solid-state electrolytes, and lithium metal protection. The goal is to design self-healing, 3-D conformal solid-state electrolytes to prevent dendrite formation and achieve high battery cycle life.

In a paper published in June in the Proceeding of the National Academy of Sciences (PNAS), the University of Maryland researchers reported their development of the first flexible, solid-state, ion-conducting membrane based on a 3D Li-ion conducting ceramic nanofiber network. (Earlier post.)

More... | Comments (2)

Dahn team develops ethylene-carbonate-free electrolytes for better-performing high-voltage Li-ion cells

August 17, 2016

Conventional electrolytes for Li-ion batteries contain ethylene carbonate (EC) and other additives. However, the cycling performance of Li-ion cells using these carbonate-based electrolytes has been poor at higher voltages (≥4.4 V) due to increased electrolyte oxidation at the surface of the cathode as the potential increases. This increased oxidation results in salt consumption, gas evolution and impedance growth, all reducing the energy density and the lifetime of Li-ion cells.

A team led by Professor Jeff Dahn at Dalhousie University (Canada) has now demonstrated that EC is actually detrimental for Li-ion cells at high voltages and that cyclic carbonates such as VC (vinylene carbonate), FEC (fluoroethylene carbonate) and DiFEC ((4R,5S)-4,5-Difluoro-1,3-dioxolan-2-one) can act as the enablers for EMC (ethylmethyl carbonate)-based electrolytes which function well in NMC442/graphite cells tested up to 4.4 or 4.5 V. A paper on their work is published the Journal of Power Sources. The team has also submitted a related paper to the Journal of the Electrochemical Society.

More... | Comments (2)

Solar Impulse 2 used Kokam Ultra High Energy NMC batteries in round-the-world solar flight

The Solar Impulse 2—the solar airplane that recently completed a round-the-world flight—used batteries from Kokam, based on that company’s advanced Ultra High Energy Lithium Nickel Manganese Cobalt (NMC) Oxide (Ultra High Energy NMC) technology.

The Solar Impulse uses four 38.5 kWh Kokam Ultra High Energy NMC battery packs—one in each motor housing—with 150 Ah cells totaling 154 kWh of energy storage. Over the course of 17 flights totaling 26,744 miles (43,041 kilometers), the Solar Impulse 2’s 17,248 mono-crystalline silicon solar cells—mounted atop the wings, fuselage and horizontal stabilizer—produced 11,000 kWh of electricity, much of which was stored in its Kokam Ultra High Energy NMC batteries and then discharged to power the plane at night.

More... | Comments (5)

DOE to award up to $137M for SuperTruck II, Vehicle Technology Office programs

August 16, 2016

The US Department of Energy (DOE) will invest up to $137 million in two programs, subject to appropriations, to develop next-generation technologies that will support industry in going beyond the newly announced Phase II standard for medium- and heavy-duty vehicles (earlier post) and also accelerating technology advances for passenger cars and light trucks.

One initiative, SuperTruck II (earlier post), will award $80 million to four projects to develop and to demonstrate cost-effective technologies that more than double the freight efficiency of Class 8 trucks. Through the other initiative, the Office of Energy Efficiency and Renewable Energy Vehicle Technologies Office Program Wide Funding Opportunity Announcement (earlier post)selections, 35 new projects will receive $57 million to develop and deploy a wide array of cutting-edge vehicle technologies, including advanced batteries and electric drive systems, to reduce carbon emissions and petroleum consumption in passenger cars and light trucks.

More... | Comments (0)

MIT analysis finds current EVs could replace ~90% of personal vehicles now on the road based on driver’s energy consumption

August 15, 2016

A study by a team at MIT has concluded that roughly 90% of the personal vehicles on the road in the US could be replaced by an electric vehicle available on the market today, even if the cars can only charge overnight. MIT Associate Professor Jessika Trancik, corresponding author of the paper published in Nature Climate, noted that this would more than meet near-term US climate targets for personal vehicle travel.

The team spent four years on the project, which included developing a way of integrating two large datasets—one highly detailed set of second-by-second driving behavior based on GPS data, and another broader, more comprehensive set of national data based on travel surveys—to estimate the energy requirements of personal vehicle trips across the US. Together, the two datasets encompass millions of trips made by drivers all around the country.

More... | Comments (11)

thyssenkrupp and partners launch collaborative project EffiForm to lower Li-ion battery cost through improved formation cycling

Under the collaborative project EffiForm (Efficient formation strategies for increased durability, reliability and safety as well as cost reduction in the production of lithium-ion cells/batteries) launched in early 2016, thyssenkrupp System Engineering is partnering with VARTA Microbattery GmbH, BMW Group, Scienlab electronic systems GmbH, Fraunhofer IKTS, the Technical University of Munich and the MEET battery research center of Westfälische Wilhelms-Universität Münster to study the SEI formation process in Li-ion batteries in detail.

The high cost of battery cells continues to be a major stumbling block to improving the cost-efficiency and popularity of e-mobility. Roughly a third of battery production costs are currently accounted for by the final step in the manufacturing process—formation cycling.

More... | Comments (0)

U Windsor team reports self-healing behavior of cracks in silicon-aluminum anodes for Li-ion batteries

August 13, 2016

One well-known problem facing the use of high-capacity silicon anodes in rechargeable Li-ion batteries is lithiation-induced volume changes in silicon, resulting in fracture and fragmentation of the anode material, with corresponding capacity loss.

A large body of research has thus been looking for a way to reduce Si electrode fragmentation and hence prevent the capacity loss. Proposed solutions have included Si/C composite electrodes with 3D architectures and nano-scale morphologies, as well as dispersing silicon particles in a ductile and inert phase. Now, a team from the University of Windsor (Ontario, Canada) is reporting self-healing behavior of cracks in micron-sized Si particles dispersed in a ductile Al matrix cycled using a high lithiation rate of 15.6 C. Their paper is published in the Journal of Power Sources.

More... | Comments (0)

U Maryland and US Army Research Lab furthering “water-in-salt” electrolyte Li-ion battery; targeting EV use

August 12, 2016

University of Maryland (UMD) and US Army Research Lab (ARL) researchers are spearheading a public-private sector collaboration to further develop a lithium-ion battery that would be safer to operate and less costly to dispose of than those currently available on the market. Their approach involves using a high concentration of salt in aqueous lithium batteries to boost energy density and viability. (Earlier post.) The UMD-ARL team won the Invention of Year of UMD in 2016 for the technology.

This water-in-salt electrolyte lithium battery recently achieved an energy density of 200 Wh/kg, said Dr. Chunsheng Wang at UMD, adding that the DOE had sought 150 Wh/kg, or double that of a traditional aqueous Li-ion battery. “The researchers in the field and program managers alike are very excited,” Dr. Kang Xu at ARL said, adding the next target is 300 Wh/kg.

More... | Comments (0)

Berkeley Lab researchers devise ant-nest-like structure for promising Li-S electrodes

August 11, 2016

Inspired by the structure of ant nests, researchers at Lawrence Berkeley National Laboratory have devised a novel Li–S electrode featuring increased sulfur loading and sulfur/inactive-materials ratio to improve life and capacity.

In a paper in the ACS journal Nano Letters, the team reports that the efficient capabilities of the ant-nest structure facilitate fast ion transportation, sustain polysulfide dissolution, and assist efficient precipitation. High cycling stability in the Li–S batteries, for practical applications, has been achieved with up to 3 mg·cm–2 sulfur loading. They also achieved Li–S electrodes with up to a 85% sulfur ratio.

More... | Comments (1)

Green Car Congress © 2017 BioAge Group, LLC. All Rights Reserved. | Home | BioAge Group