Silicon is lighter, and can potentially store more energy, than graphite. However, there is another candidate for this key position. Unlike cathodes, which can be composed of various combinations of chemicals (cobalt, nickel, manganese, lithium, iron, phosphorus et al), all current anodes used in EV batteries are composed mainly of graphite. Graphite’s physical structure allows it to store lithium ions, which merrily migrate to the anode when the battery is charged. Graphite, a pure form of carbon, is a critical material for battery anodes. However, establishing domestic sources, and especially processing, is a priority. Silicon is an abundant resource, so it has been less affected by supply chain bottlenecks than other critical raw materials such as nickel, cobalt and aluminum.NanoGraf’s technology can be “dropped into” existing manufacturing processes, so battery makers can increase the silicon content of their anodes without expensive retooling.NanoGraf has developed a way to increase the stability of silicon oxide, so more can be incorporated into an anode, increasing energy density.Silicon can potentially store 10 times as much energy as graphite, but it’s less stable, so it isn’t (currently) feasible to build an entire anode out of silicon. Current EV battery anodes are composed mostly of graphite.Posted Februby Charles Morris & filed under Features, Newswire, Tech Features, The Tech. How NanoGraf is commercializing the “world’s most energy-dense” 18650 battery cell with stable silicon oxide
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