Battery developer Amprius Technologies has reported that its silicon anode lithium-ion battery cells can charge to 80% from zero state of charge in under six minutes.
Pouch cells using the firm’s Si-Nanowire platform with a nominal capacity of 2750mAh were verified by battery regulatory compliance, safety, and performance testing company Mobile Power Solutions
The purpose of the test was to evaluate cell performance at high charging rates (10C).
Jon Bornstein, chief operating officer of Amprius Technologies, said: “The need to shorten charge times extends well beyond the rapidly growing EV market and into the broader electric-mobility markets, including micro-mobility and aviation.”
Amprius’ technology uses its proprietary Si-Nanowire anode, which is thinner and lighter than conventional graphite anodes and has much higher conductivity due to the high electrical continuity between silicon and the current collector, say the firm.
The very low tortuosity of the Si-Nanowire anode structure also facilitates Extreme Fast Charge.
