## XG Sciences silicon graphene anode material shows stability over 400 cycles with 600 mAh/gram

##### 10 March 2015

XG Sciences (XGS), a leading provider of graphene nanoplatelets, has demonstrated full battery cell cycle stability through more than 400 charge/discharge cycles with a charge storage capacity of 600 mAh/gram over a broad voltage window in its next generation silicon graphene (earlier post) (XG SiG) anode materials for lithium-ion batteries.

We believe our latest material is the first commercially viable silicon and graphene based anode formulation to achieve this all important performance threshold. With charge storage capacity of up to 4 times today’s typical anodes, first cycle efficiency of 85-90%, low swelling and life that is more than double our previous generation, we believe this material will open many new markets for our customers with an affordable and safe anode formulation,” said Dr. Philip Rose, XGS CEO.

 Source: XGS. Click to enlarge.

XGS produces the anode material through proprietary manufacturing processes and uses its xGnP graphene nanoplatelets to stabilize silicon particles in a nano-engineered composite structure.

Robert Privette, XG Sciences’ Vice President of Energy Markets, said that XGS is working with battery manufacturers globally to incorporate XG SiG anodes and xGnP graphene conductive additives into their products. Multiple battery formats and multiple battery design capacities are under test.

We foresee a wide range of applicable battery applications in any market where energy storage is a high priority—like handheld electronics, automotive, and industrial energy storage.

—Rob Privette

In January 2014, Samsung Ventures invested in XGS. (Earlier post.)

XG Sciences is presenting in three upcoming industry conferences:

• a presentation at the 32nd International Battery Seminar & Exhibition (9-12 March) in Fort Lauderdale, FL;

• a presentation at the 2015 Next Generation Batteries Conference (21-22 April) in San Diego, CA; and

• a poster at the US Department of Energy (DOE) Annual Merit Review Meeting (8-11 June) in Washington, DC.

XG Sciences is also partnering with Shmuel De-Leon and Prof. Doron Aurbach (Bar Ilan University) for a 3-day technical seminar on batteries, supercapacitors, fuel cells and electric vehicles. The three-day seminar will provide participants from all levels of the commercial supply chain as well as academic researchers with the opportunity to address the latest technologies and application requirements. XG Sciences will host the event at its Lansing, MI offices on 6-8 July.

### Comments

It still blows my mind that we get what seems to be legitimate announcements on battery advances and we've all become so numb to them that we don't even respond anymore LOL

A couple of years ago, we'd have had a lively discussion about this one. But I guess that's good in a way as we now expect that the real thing will be here sooner or later so there is no point going on and on about it.

@DaveD A couple of years ago, we'd have had a lively discussion about this one.
How many times have you heard his and never seen the result come to market. Hard to get excited when after years of hearing half truths and actual lies (remember EEStor) that you do get numb. Wake me when you have the Bolt at under 20K getting that 200 miles per charge in the dead of -10 winter in Chicago. I will post ding dong gas is dead. Until then, looking for a car means getting an ICE because batteries are just too expensive heavy and honestly unaffordable.

@D
'batteries are just too expensive heavy and honestly unaffordable'

Agreed weight (kWh per kg) needs to improve but at 62 quid per month for battery rental, I'm quids in over petrol costs.
Kinda nice not to be contributing to the problems in our local air quality management area, too even if I don't personally live there or suffer from asthma, bronchitis or coronary disease.

+1 Thomas.

If a battery electric will not fulfill your daily range requirements, a plug-in hybrid will at least get you the first 20-80 miles.

In the US, the Chevy Volt can be had for as low as $149 per month. I've seen BMW i3s as low as$269.

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