In May 2008, Stanford University Professor of Materials Science, Dr. Yi Cui founded Amprius, Inc. based on his breakthrough research in silicon nanowires for energy storage and usage. Amprius’ immediate goals include commercialization of silicon-based anode materials with 10 times the capacity of current carbon anodes, offering an increase in cell capacity of roughly 40%.
Amprius goal is to enable batteries with a significant higher energy density, while other battery companies are focused on the power of a battery – e.g. how fast your electric car can accelerate or how powerful your electric drill is.
Amprius has developed an alternative anode made of silicon nanowires instead of carbon. Silicon can hold over 10X more lithium compared to carbon. However, even with today’s best commercially available cathode materials this does not yet result in a battery with 10X greater capacity.