Commercial,High Capacity Silicon/Graphene Anode for Li-Ion Batteries

R. Privette
XG Sciences, Inc, US

Keywords: graphene, silicon, graphene nanoplatelets, anode, Li-ion battery, XG Sciences

Summary:

Commercial Silicon-graphene anode materials for High Specific Energy Li-ion Batteries Lithium-ion batteries (LIB)s are in demand for applications including portable electronics, stationary energy storage, low or zero-emission transportation, and distributed power generation using renewable sources. The success of LIBs in these markets, depends on the cost, energy and power density, cycle life, and safety of the battery cells, which is dependent on the type of electrode materials used. For next-generation LIBs, Silicon (Si) has recently emerged as one of the most promising anode materials due to its high capacity and proper working voltage. Silicon can provide up to 4200 mAh/g lithium storage capacity, greatly surpassing the 372 mAh/g capacity of present graphite anodes. XG Sciences (XGS) has developed a high-performance commercial Si/graphene nanocomposite anode material via a bulk, low-cost process. Unique aspects of XGS’s product include simplicity and versatility in the manufacturing process. Because the products are fabricated using XGS’ patented, high-rate manufacturing process the Si/graphene anode material delivers high performance characteristics at a low-cost of $20/kWh. The aggregate product which consists of individual Si particles tightly coated by graphene platelets, demonstrates excellent Li ion transport, electrical conductivity, chemical resistance, and mechanical strength.