XG Sciences launches graphene-stabilized silicon anode materials for Li-ion batteries
11 April 2013
XG Sciences, Inc. (XGS), a manufacturer of graphene platelets, has launched silicon anode materials for Li-ion batteries, with immediate availability. The new anode material is produced through proprietary manufacturing processes and uses the company’s xGnP graphene nanoplatelets to stabilize silicon particles in a nano-engineered composite structure.
The material displays significantly improved charge storage capacity—around 4x that of conventional anode materials—with good cycle life and high efficiencies. Rob Privette, VP Energy Markets for the company, said that the exact performance of the new anode materials will depend on the specific battery formulations used by cell manufacturers. XGS has demonstrated capacity of 1500 mAh/g with low irreversible capacity loss and stable cycling performance.
We are pleased to announce the immediate availability of this new high-capacity anode product. Our new Silicon-graphene anode material, when used in combination with our existing xGnP graphene products as conductive additives, provides significantly higher energy storage than conventional battery materials. We are working with battery makers to translate this exciting new material into batteries with longer run-time, faster charging and smaller sizes than today’s batteries.
One of the key focus areas of our research team was to produce a material that can be inserted relatively easily into the complex battery production processes that are used today. Our goal was to minimize the need for major changes to electrode coating processes or assembly techniques.
We expect initial adoption in the highly-competitive consumer electronics markets that are dominated by Asian battery makers, but we also have research and development partners that are focused on hybrid and electric vehicles, grid storage, military, and specialty industrial applications. Over time, we anticipate formulating custom nano-engineered anode materials with specific properties for each of these major markets.—Rob Privette
Two of the company’s strategic partners, POSCO and Hanwha Chemical, already manufacture electrode materials for lithium-ion batteries, noted Mike Knox, XGS CEO. One licensee, Cabot Corporation, recently introduced their first battery additive based on XGS technology. XGS is also working with development partners such as Georgia Tech, several large battery manufacturers, and several of the US National Laboratories, Knox said.
Last fall, the US Department of Energy (DOE) has awarded XGS a contract to develop low-cost, high-energy Si/graphene anodes for Li-ion batteries for use in extended range electric vehicle applications. XG Sciences is leading a team that includes battery maker LG Chem Power, Inc. and the Georgia Institute of Technology. (Earlier post.)
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