[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.]
Uno-X Hydrogen to build 1st hydrogen refueling station w/ hydrogen produced by surplus renewable energy from neighboring building
April 04, 2016
Uno-X Hydrogen AS, a NEL ASA (NEL) joint venture, will build a hydrogen refueling station (HRS) with on-site hydrogen production co-located with Powerhouse Kjørbo, an energy-positive office building in Sandvika, Norway.
Powerhouse Kjørbo, which is owned by Entra ASA, uses solar panels that can supply upward of 200,000 kWh each year, twice the amount of the building’s annual energy consumption. Excess electricity from solar will be used to produce the hydrogen on-site.
Researchers synthesize first ruthenium nanoframes; potential for better catalysts
April 02, 2016
A team of chemists, led by Xiaohu Xia from Michigan Technological University, has developed an effective method based on seeded growth and chemical etching for the facile synthesis of ruthenium (Ru) nanoframes (NFs) with high purity for use as effective catalysts. A paper on their work is published in the ACS journal Nano Letters
Although this marks the first synthesis of ruthenium nanoframes, the break-through is not limited to this one metal. Xia says the process the team developed is more important.
SLAC, U Toronto team develops new highly efficient ternary OER catalyst for water-splitting using earth-abundant metals; >3x TOF prior record-holder
March 25, 2016
Scientists from the Department of Energy’s SLAC National Accelerator Laboratory and the University of Toronto have developed a new type of ternary catalyst for the oxygen evolution reaction (OER) in water-splitting that exhibits a turnover frequency (TOF) that’s more than three-times above the TOF and mass activities of optimized control catalysts and the state-of-art NiFeOOH catalyst.
The research, published in the journal Science, outlines a potential way to make a future generation of water-splitting catalysts from three abundant metals—iron (Fe), cobalt (Co) and tungsten (W)—rather than the rare, costly metals on which many of today’s catalysts rely. The gelled FeCoW oxy-hydroxide material exhibits the lowest overpotential (191 mV) reported at 10 mA per square centimeter in alkaline electrolyte. Further, the ternary catalyst showed no evidence of degradation following more than 500 hours of operation.
Japanese public-private partnership to test end-to-end H2 supply chain using wind power to begin this fall; 2nd-life hybrid batteries for ESS
March 14, 2016
A Japanese partnership comprising the Kanagawa Prefectural Government; the municipal governments of the cities of Yokohama and Kawasaki; Toyota; Toshiba; and Iwatani announced the forthcoming start of a four-year project to implement and evaluate an end-to-end low-carbon hydrogen supply chain which will use hydrogen produced from renewable energy to power forklifts. (Earlier post.) The project will be carried out at facilities along Tokyo Bay in Yokohama and Kawasaki, with support from Japan’s Ministry of the Environment.
Electricity generated at the Yokohama City Wind Power Plant (Hama Wing) will power the electrolytic production of hydrogen, which will then be compressed, stored, and then transported in a hydrogen fueling truck to four sites: a factory, a vegetable and fruit market, and two warehouses. At these locations, the hydrogen will be used in fuel cells to power forklifts operating in diverse conditions.
German team doubles activity of water electrolysis catalysts for H2 production with monolayer of copper on platinum
March 10, 2016
A team from the Ruhr-Universität Bochum, Technische Universität München and Universiteit Leiden has doubled the catalytic activity of electrodes for water electrolysis by applying a monolayer of copper the platinum electrodes. The resulting electrodes are the most active electrocatalysts ever reported for the HER (hydrogen evolution reaction) in acidic media under comparable conditions, to the best of their knowledge, wrote the authors in an open-access paper in the journal Nature Communications.
Only about 4% of global hydrogen production is via water electrolysis, according to a 2012 analysis (Bičáková and Straka). The main impediments to a wider commercialization are the high energy losses in electrolyzers due to the insufficient activity of state-of-the-art electrodes.
New photoelectrode with enhanced visible light absorption for improved solar water-splitting for hydrogen production
February 16, 2016
A team of researchers at Ulsan National Institute of Science and Technology (UNIST), Korea University, and the Korea Advanced Institute of Science and Technology (KAIST) has developed a new type of multilayered (Au NPs/TiO2/Au) photoelectrode that could boost the ability of solar water-splitting to produce hydrogen.
This multilayered photoelectrode is a two-dimensional hybrid metal-dielectric structure, comprising three layers of gold (Au) film; an ultrathin TiO2 layer (20 nm), and gold nanoparticles (Au NPs). In a study, reported in the journal Nano Energy, the team reported that the photoelectrode shows high light absorption of about 90% in the visible range 380-700 nm, as well as significant enhancement in photo-catalytic applications.
Process for production of jet-range hydrocarbons from crude Jatropha oil using hydrogen produced in-situ from formic acid
A team at the Korea Institute of Energy Research has developed a catalytic process for the production of jet-range oxygen-free hydrocarbons from crude Jatropha oil, using hydrogen produced in-situ from formic acid.
In a fixed bed reaction using a mixture of crude Jatropha oil and formic acid, normal hydrocarbon in the range of C10–C18 (mostly C15 and C17) was the main product—about 97% in the liquid product—and the degree of deoxygenation was about 99.5%. A paper on their work is published in the journal Fuel.
Berkeley team develops host-guest nanowires for efficient water splitting and solar energy storage
February 04, 2016
Although metal oxides that absorb visible light are attractive for use as photoanodes in photoelectrosynthetic cells, their performance is often limited by poor charge carrier transport. Researchers from UC Berkeley and colleagues have now addressed this issue by using separate materials for light absorption and carrier transport.
The team reports on their host-guest system of Ta:TiO2|BiVO4 as a photoanode for use in solar water splitting cells in an open-access paper in the journal ACS Central Science. BiVO4 acts as a visible light-absorber and Ta:TiO2 acts as a high surface area electron conductor. The host–guest nanowire architecture allows for simultaneously high light absorption and carrier collection efficiency for efficient solar water oxidation.
New German ecoPtG project seeks to make power-to-gas commercially viable with help of automotive technology
In collaboration with engineering partner IAV, the Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg (Centre for Solar Energy and Hydrogen Research Baden-Württemberg, ZSW); the Reiner Lemoine Institut (RLI); and Wasserelektrolyse Hydrotechnik (HT) are researching cost-effective methods of producing hydrogen with the help of automotive technology. In the ecoPtG project, the researchers and engineers are developing an alkaline water electrolyzer with an output of 100 kW. They aim to demonstrate that CO2-neutral hydrogen can be produced in a cost-effective manner and intend to facilitate the storage of electricity.
Electricity is increasingly being generated from fluctuating renewable sources. Solar and wind energy generation depends on the weather and is subject to significant fluctuations. At times, renewable energy production thus temporarily exceeds regional demand. Hydrogen produced according to the power-to-gas method can play a role in resolving this challenge and decarbonizing the transport sector. By converting electricity to gas, solar and wind power become storable. If required, hydrogen can be reconverted or used as environmentally compatible fuel for fuel cell vehicles.
Tottori Prefecture, Tottori Gas, Sekisui House and Honda cooperate in hydrogen demonstration; smart house and FCV
January 25, 2016
Tottori Prefecture, Tottori Gas Co., Ltd, Sekisui House Ltd. and Honda Motor Co., Ltd. signed an agreement to pursue jointly Tottori Prefecture’s project to establish a base for a hydrogen energy demonstration (and environmental education). This will be Japan’s first case where hydrogen energy will be utilized through the integration of a hydrogen station which creates hydrogen from renewable energy, a smart house and a fuel cell vehicle (FCV).
The purpose of this project is to promote the popularization of smart houses and FCVs. The project will install, for the first time on the Sea of Japan side of the archipelago, a Smart Hydrogen Station (SHS) using Honda’s high-differential-pressure electrolyzer that supplies hydrogen created by electrolysis of water using renewable energy. Honda will also supply its new Clarity fuel cell vehicle.
IU scientists create self-assembling biocatalyst for the production of hydrogen; modified hydrogenase in a virus shell
January 04, 2016
Scientists at Indiana University have created a highly efficient self-assembling biomaterial that catalyzes the formation of hydrogen. A modified hydrogenase enzyme that gains strength from being protected within the protein shell (capsid) of a bacterial virus, this new material is 150 times more efficient than the unaltered form of the enzyme.
The material is potentially far less expensive and more environmentally friendly to produce than other catalytic materials for hydrogen production. The process of creating the material was recently reported in the journal Nature Chemistry.
DOE releases three reports showing strong growth in US fuel cell and hydrogen technologies market
December 24, 2015
The US Department of Energy (DOE) released three new reports today showcasing strong growth across the US fuel cell and hydrogen technologies market. According to these reports, the United States continues to be one of the world’s largest and fastest growing markets for fuel cell and hydrogen technologies.
With support from the Energy Department, its national laboratories and private industry have already achieved significant advances in fuel cell and hydrogen technologies, resulting in reduced costs and improved performance. These research and development efforts have helped reduce automotive fuel cell costs by more than 50% since 2006 and by more than 30% since 2008. At the same time, fuel cell durability has quadrupled and the amount of expensive platinum needed in fuel cells has decreased by 80 percent in the last decade.
FuelCell Energy pathway for hydrogen from digester gas has negative carbon intensity for CA LCFS
December 23, 2015
Connecticut-based FuelCell Energy (FCE) has applied for a prospective pathway for California’s Low Carbon Fuel Standard (LCFS) for the production of hydrogen fuel produced from biogas derived from the mesophilic anaerobic digestion of wastewater sludge at a publicly owned treatment works (POTW).
The biogas is cleaned, then internally reformed in an integrated hydrogen energy system (Tri-Gen DFC) that produces hydrogen fuel for transportation; electric power for plant operations and export; as well as thermal energy for plant use. Once the internal energy demands of the pathway have been met, any energy not utilized for process is considered to be surplus to the system boundary and is credited to the FCE pathway.
NREL research advances photoelectrochemical production of hydrogen using molecular catalyst
December 21, 2015
Researchers at the Energy Department’s National Renewable Energy Laboratory (NREL) have made advances toward affordable photoelectrochemical (PEC) production of hydrogen. A paper on their work is published in Nature Materials.
The PEC process uses solar energy to split water into hydrogen and oxygen. The process requires special semiconductors, the PEC materials and catalysts to split the water. Previous work used precious metals such as platinum, ruthenium and iridium as catalysts attached to the semiconductors. A large-scale commercial effort using those precious metals wouldn’t be cost-effective, however.
Purdue, EPFL team propose Hydricity concept for integrated co-production of H2 and electricity from solar thermal energy
December 16, 2015
Researchers from Purdue University and École Polytechnique Fédérale de Lausanne (EPFL) in Switzerland are proposing a new integrated process involving the co-production of hydrogen and electricity from solar thermal energy—a concept they label “hydricity”. They describe their proposal in a paper in the Proceedings of the National Academy of Sciences (PNAS).
The hydricity process entails integrating solar water power (SWP) cycle and solar thermal hydrogen production technologies and a turbine-based hydrogen power cycle with suitable improvements of each for compatibility and beneficial interaction.
DOE issues $35M funding opportunity for hydrogen and fuel cell technologies
December 11, 2015
The US Department of Energy (DOE) announced up to $35 million in available funding to advance hydrogen and fuel cell technologies (earlier post) to support research and development, early market deployments, and domestic manufacturing. The Department also aims to develop collaborative consortia for fuel cell performance and durability and advanced hydrogen storage materials research to leverage the capabilities of national lab core teams.
The available funding (DE-FOA-0001412) includes hydrogen production, delivery, and storage research and development (R&D); demonstration of infrastructure component manufacturing, and support for Climate Action Champions deploying hydrogen and fuel cell technologies; consortia topics for fuel cell performance and durability and advanced hydrogen storage materials research; and cost and performance analysis for hydrogen production, storage, and fuel cells.
Proof-of-principle of cost-effective methane cracking technology for H2 production without CO2; 50% cleaner than SMR, comparable to electrolysis
November 19, 2015
Researchers of the Institute for Advanced Sustainability Studies (IASS) in Potsdam and the Karlsruhe Institute of Technology (KIT) have achieved the proof-of-principle for a innovative technique to extract hydrogen (H2) from methane (CH4) without the formation of CO2 as a byproduct.
At this stage, cost estimates are uncertain, since methane cracking is not yet a fully mature technology. However, preliminary calculations show that it could achieve costs of €1.9 to €3.3 per kilogram of hydrogen at German natural gas prices—without taking the market value of the solid black carbon byproduct of the process into consideration.
PNNL team presents new insight into H2 production by cyanobacterium Cyanothece
November 11, 2015
Researchers at the US Department of Energy’s (DOE’s) Pacific Northwest National Laboratory (PNNL) have presented a new and more complete view on the way a cyanobacterium—Cyanothece 51142—produces hydrogen.
Using genome-scale transcript and protein profiling, the team study presented and tested a new hypothesis on the metabolic relationship between oxygenic photosynthesis and nitrogenase-mediated H2 production in Cyanothece 51142. The results, reported in an open-access paper in Nature’s Scientific Reports, show that net-positive rates of oxygenic photosynthesis and increased expression of photosystem II reaction centers correspond and are synchronized with nitrogenase expression and H2 production.
AC Transit files LCFS pathway application for H2 produced by electrolysis (solar): 0.00 gCO2e/MJ
November 06, 2015
AC Transit (Alameda-Contra Costa Transit District), which operates the third-largest public bus system in California, has filed a fuel pathway application for gaseous hydrogen produced via electrolysis powered by renewable electricity (solar) with the California Air Resources Board (ARB) under the Low Carbon Fuel Standard (LCFS) regulation.
According to AC Transit’s analysis—which is supported by ARB Staff—the carbon intensity (CI) of the gaseous hydrogen produced by the pathway is 0.00 gCO2e/MJ—i.e., a zero-carbon fuel on a “well-to-tank” lifecycle basis.
Atomic cobalt on nitrogen-doped graphene catalyst shows promise to replace platinum for hydrogen production
October 21, 2015
The Rice lab of chemist James Tour and colleagues at the Chinese Academy of Sciences, the University of Texas at San Antonio and the University of Houston have developed a robust, solid-state catalyst that shows promise to replace expensive platinum for hydrogen generation.
The new electrocatalyst, based on very small amounts of cobalt dispersed as individual atoms on nitrogen-doped graphene (Co-NG), is robust and highly active in aqueous media with very low overpotentials (30 mV). In an open-access paper published in Nature Communications, the researchers suggested that the unusual atomic constitution of supported metals is suggestive of a new approach to preparing extremely efficient single-atom catalysts.
California Hydrogen Business Council says a robust P2G RD&D program should be a priority for the state
October 14, 2015
The case for using Power-to-Gas solutions to store renewable energy is compelling for a number of important use cases, according to a new white paper released by the California Hydrogen Business Council (CHBC). The paper, —“Power-To-Gas: The Case For Hydrogen”—outlines the feasibility and economics of renewable energy storage solutions using P2G. Among the paper’s conclusions is that a robust P2G RD&D program should be a priority for the state of California. Currently, P2G is being deployed in Europe and Canada but is only at the early demonstration phase in California.
P2G systems use electrolysis powered by renewable energy to split water into hydrogen and oxygen—i.e., P2G converts electrical energy to chemical energy in the form of hydrogen. The hydrogen can then be transported through the natural gas grid via blending or further conversion to methane, transported by other means such as trucks, or used directly at the point of production. (Posts.)
Hydrexia and HyGear partner on low-cost hydrogen distribution in Europe; solid state storage and delivery
October 13, 2015
Australia-based hydrogen solid state storage and distribution company Hydrexia has entered an agreement with Netherlands-based HyGear, supplier of industrial gases and on-site generation systems, to supply hydrogen in Europe. The hydrogen will be produced by HyGear’s small-scale Hy.GEN steam methane reforming (SMR) facilities located across Europe.
The agreement between the two companies allows for development and supply of a complete hydrogen generation, storage and distribution system with a lower cost product for customers. Hydrexia is entering the European market in partnership with HyGear with the intention of becoming a distributor of the lowest cost hydrogen in Europe.
Sandia team boosts hydrogen production activity by molybdenum disulfide four-fold; low-cost catalyst for solar-driven water splitting
October 07, 2015
A team led by researchers from Sandia National Laboratories has shown that molybdenum disulfide (MoS2), exfoliated with lithiation intercalation to change its physical structure, performs as well as the best state-of-the-art catalysts for the hydrogen evolution reaction (HER) but at a significantly lower cost. An open access paper on their study is published in the journal Nature Communications.
The improved catalyst has already released four times the amount of hydrogen ever produced by MoS2 from water. To Sandia postdoctoral fellow and lead author Stan Chou, this is just the beginning: “We should get far more output as we learn to better integrate molly with, for example, fuel-cell systems,” he said.
Toyota and public and private partners in Japan to trial renewable CO2-free hydrogen supply chain
September 08, 2015
Major corporate and public sector partners in Japan are launching an effort to test a full carbon-neutral hydrogen supply chain powered by renewable wind energy. The trials are planned to take place near the cities of Yokohama and Kawasaki in the Keihin coastal region.
On the public sector side, the project is being implemented by the Kanagawa Prefectural Government, Yokohama City, and Kawasaki City. The four private sector participants are Iwatani Corporation, Toshiba Corporation, Toyota Motor Corporation, and Toyota Turbine and Systems Inc. In addition, the project will be supported by Japan’s Ministry of the Environment.
Rice team demonstrates plasmonic hot-electron solar water-splitting technology; simpler, cheaper and efficient
September 05, 2015
Researchers at Rice have demonstrated an efficient new way to use solar energy for water splitting. The technology, described in a paper in the ACS journal Nano Letters, relies on a novel plasmonic photoelectrode architecture of light-activated gold nanoparticles that harvest sunlight to drive photocatalytic reactions by efficient, non-radiative plasmon decay into “hot carriers”—highly excited electrons.
In contrast to past work, the new architecture does not utilize a Schottky junction—the commonly used building block to collect hot carriers. Instead, the team observed large photocurrents from a Schottky-free junction due to direct hot electron injection from plasmonic gold nanoparticles into the reactant species upon plasmon decay.
DLR-led NEMESIS 2+ project develops compact direct steam reformer for diesel/biodiesel to H2
September 02, 2015
The European NEMESIS 2+ consortium has and successfully tested a pre-commercial on-site system for the production of hydrogen from diesel and biodiesel. The prototype system—the size of a shipping container—can be integrated into existing infrastructure with relative ease.
The prototype, built by the Dutch project partner HyGear, produces 4.4 kilograms of hydrogen from 20 liters of biodiesel per hour—this roughly corresponds to the fuel tank of a B-Class F-cell vehicle. The efficiency of the process, from start to finish, is approximately 70%. (Original project goals were 50 Nm3/h, or 4.5 kg/h with an efficiency >80%.) The EU NEMESIS 2+ project, which ran until June 2015, was coordinated by the German Aerospace Center (DLR).
JCAP team reports first complete “artificial leaf”; >10% solar-to-hydrogen conversion efficiency
August 28, 2015
Researchers at the Joint Center for Artificial Photosynthesis (JCAP) report the development of the first complete, efficient, safe, integrated solar-driven system—an “artificial leaf”—for splitting water to produce hydrogen. JCAP is a US Department of Energy (DOE) Energy Innovation Hub established at Caltech and its partnering institutions in 2010.
The new system has three main components: two electrodes—one photoanode and one photocathode—and a membrane. The photoanode uses sunlight to oxidize water molecules, generating protons and electrons as well as oxygen gas. The photocathode recombines the protons and electrons to form hydrogen gas. A key part of the JCAP design is the plastic membrane, which keeps the oxygen and hydrogen gases separate. If the two gases are allowed to mix and are accidentally ignited, an explosion can occur; the membrane lets the hydrogen fuel be separately collected under pressure and safely pushed into a pipeline.
Proposed process for low-emissions coal-to-liquids
August 05, 2015
The EMS (Earth and Mineral Science) Energy Institute at Penn State has developed a conceptual novel process configuration for producing clean middle-distillate fuels from coal with some algal input with minimal emissions.
The Institute was involved for about 20 years in a project intended to develop a coal-derived jet fuel; a number of papers and reports have already been published on that work. In a new paper in the journal Technology, Professor (Emeritus) Harold Schobert combined a review of the two decades of development with the novel conceptual approach for near-zero emissions coal-to-liquids.
DLR techno-economic valuation of power-to-liquids finds reducing electrolyzer and electricity costs key to cost-competitive liquid hydrocarbons
July 20, 2015
In 2012, the Helmholtz Association of German Research Centers launched a three-year project on the production of synthetic liquid hydrocarbons from electricity (i.e. Power-to-Liquids, PtL) using a multistage process (SynKWS), in cooperation with the German Aerospace Center (DLR) – Institute of Combustion Technology Stuttgart; the University of Stuttgart IFK; and the University of Bayreuth – Chair of Chemical Engineering.
As part of the SynKWS work, DLR researchers have now published a techno-economic study of a modeled PtL process in the journal Fuel. The multi-stage process uses renewable power to produce hydrogen using a proton exchange membrane (PEM) electrolyzer. The hydrogen from electrolysis and CO2, delivered by a pipeline, are fed to a plant where the gases are converted in a reverse water–gas shift (RWGS) reactor to syngas (H2 and CO). The syngas is then further converted to hydrocarbons using Fischer-Tropsch (FT) synthesis. The hydrocarbon syncrude is upgraded and separated from unreacted feed and gaseous hydrocarbons to make the final product.
Fukushima launching power-to-gas hydrogen project with MCH as hydrogen carrier; supply center by 2016
Fukushima and the Fukushima Renewable Energy Institute (FREA) have launched a power-to-has project with a view to making the prefecture a hydrogen supply center by as early as 2016, according to a report in The Japan Times, via Fukushima Minpo. The project will test and refine a model of hydrogen-supply infrastructure, which would then be used in creating a functioning supply center.
The project is a collaboration between the prefecture and the National Institute of Advanced Industrial Science and Technology (AIST), the parent of FREA. AIST established FREA in April 2014 to promote R&D into renewable energy. FREA has two basic missions: the promotion of R&D into renewable energy, which is open to the world; and making a contribution to industrial clusters and reconstruction.
Stanford team develops new low-voltage single-catalyst water splitter for hydrogen production
June 23, 2015
Researchers at Stanford University have developed a new low-voltage, single-catalyst water splitter that continuously generates hydrogen and oxygen. An open access paper describing the synthesis and functionality of the bi-functional non-noble metal oxide nanoparticle electrocatalysts appears in the journal Nature Communications.
In the reported study, the new catalyst achieved 10 mA cm−2 water-splitting current at only 1.51 V for more than 200 h without degradation in a two-electrode configuration and 1 M KOH—better than the combination of iridium and platinum as benchmark catalysts.
McGill team develops simple system for reversible H2 storage using organic cyclic hydrocarbons; alternative route to solar fuels
June 15, 2015
A team at McGill University in Canada has developed a reversible hydrogen storage/release system based on the metal-catalyzed hydrogenation and photo-induced dehydrogenation of organic cyclic hydrocarbons at room temperature. The system, they suggest in a paper published in the Journal of the American Chemical Society, provides an alternative route to artificial photosynthesis for directly harvesting and storing solar energy in the form of chemical fuel.
The system easily switches between hydrogen addition (>97% conversion) and release (>99% conversion) with superior capacity of 7.1 H2 wt% using a rationally optimized platinum catalyst with high electron density, simply regulated by dark/light conditions. In a paper published in the Journal of the American Chemical Society, the researchers reported that the photodriven dehydrogenation of cyclic alkanes gave an excellent apparent quantum efficiency of 6.0% under visible light illumination (420–600 nm) without any other energy input.
DOE Hydrogen and Fuel Cell Program Annual Merit Review Awards
Each year, at the US Department of Energy’s (DOE) Annual Merit Review and Peer Evaluation Meeting, the Hydrogen and Fuel Cells Program presents awards for contributions to the overall efforts of the Program and to recognize achievements in specific areas. At last week’s merit review meeting, DOE made awards to 13 engineers and researchers.
Hydrogen and Fuel Cells Program Awards. DOE awarded two Hydrogen and Fuel Cells Program awards: one to George Parks of Fuel Science, the other to Jesse Schneider of BMW. (Schneider also recently received the 2015 James M. Crawford Technical Standards Board Outstanding Achievement Award from SAE for his work on hydrogen standards.)
SAE World Congress panel highlights progress on H2 infrastructure and fuel cell vehicle commercialization
May 12, 2015
Although the SAE World Congress has been running panel sessions on fuel cell vehicle commercialization since 2005, this year was the first in which three participating automakers—Toyota, Hyundai and Honda—had fuel cell vehicles that customers can buy now or within a year. (Earlier post.) Many other OEMs are also working on development of fuel cell vehicles as well.
The PFL 799 technical executive expert panel at this year’s world Congress, chaired by Jesse Schneider (from BMW), invited those automakers as well as infrastructure leaders to discuss their progress in fuel cell technology and hydrogen infrastructure and challenges remaining. Participants included Hyundai, GM, Honda, Toyota, Linde and Air Liquide.
US-China team develops new class of catalyst superior to platinum for H2O splitting and H2 generation
May 11, 2015
|Potential sweeps caused substantial activity degradation for the Pt catalyst, but nearly no activity change for the NiAu/Au catalyst. Credit: ACS, Lv et al.. Click to enlarge.|
A team from Brown University, Wuhan University of Technology (China), Cal State University Northridge and Harbin Institute of Technology (China) has developed a new catalyst for a highly efficient hydrogen evolution reaction based on core/shell NiAu/Au nanoparticles (NPs).
In their paper, published in the Journal of the American Chemical Society, the researchers go on to suggest that their approach is not limited to NiAu but can be extended to FeAu and CoAu as well, providing a general approach to MAu/Au NPs as a class of new catalyst with platinum-like activity and much superior durability for water splitting and hydrogen generation.
EPFL team develops effective membrane-less electrolysis process for H2 production; potential to outperform conventional designs
April 28, 2015
Researchers at EPFL in Switzerland have developed a system for producing hydrogen through a simplified membrane-less water electrolysis process. By working with the balance between fluid mechanic forces, the researchers eliminated the expensive membrane that sits between the electrodes in conventional electrolysis systems.
The membrane-less approach demonstrates for the first time an electrolyzer capable of operating robustly and continuously with various catalysts and electrolytes across the pH scale, while at the same time generating hydrogen gas streams the oxygen content of which is well below the safety limit. An open access paper on their discovery is published in the RSC journal Energy and Environmental Science.
Self-propelled catalytic microparticles boost hydrogen release from liquid storage media
April 27, 2015
Researchers at the University of California San Diego (UCSD) have developed catalytically active micromotors that significantly increase the release of hydrogen from liquid storage media. In a paper in the journal Angewandte Chemie, they introduce their new concept with a model vehicle powered by a hydrogen–oxygen fuel cell.
The new motion-based H2-generation concept relies on the continuous movement of Pt-black/Ti Janus microparticle motors in a solution of sodium borohydride (NaBH4). The autonomous motion of catalytic micromotors in the NaBH4 solution and their effective bubble generation provide a favorable hydrodynamic environment that significantly enhances the fuel supply to the catalytic surface, and thus to rapid H2 generation, compared with that obtained from a static catalyst: about 9.2-times more rapid.
Virginia Tech team engineers optimized synthetic enzymatic pathway for high-yield production of H2 directly from biomass
April 07, 2015
A team of Virginia Tech researchers and colleagues has demonstrated the complete conversion of glucose and xylose from pretreated plant biomass to H2 and CO2 based on an in vitro synthetic enzymatic pathway crafted from more than 10 purified enzymes. Glucose and xylose were simultaneously converted to H2 with a yield of two H2 per carbon, the maximum possible yield.
The researchers used a nonlinear kinetic model fitted with experimental data to identify the enzymes that had the greatest impact on reaction rate and yield. After optimizing enzyme loadings using this model, volumetric H2 productivity was increased 3-fold to 32 mmol H2⋅L−1⋅h−1. The productivity was further enhanced to 54 mmol H2⋅L−1⋅h−1 by increasing reaction temperature, substrate, and enzyme concentrations—an increase of 67-fold compared with the initial studies using this method.