US battery developer Amprius Technologies has delivered A-sample battery cells from its SiMaxx product line to the United States Advanced Battery Consortium (USABC). The cells are being delivered under a three-million technology development contract awarded to Amprius by the USABC back in May of 2022. The goal of the project is to develop a low-cost, fast-charging silicon nanowire battery.
Cells exceed USABC targets
In internal tests the battery cells achieved a specific energy of 360 watt-hours per kilogram at the beginning of their life. This exceeds the USABC end-of-life target of 275 watt-hours per kilogram. Furthermore, the power density of the cells is said to be 1,200 watts per kilogram. According to Amprius, the cells are able to charge to 90 percent of their nominal energy within 15 minutes, exceeding the USABC target of 80 percent in the same period of time. Amprius is targeting a cell life of 1,000 charge cycles.
Advanced battery technologies
USABC is a subsidiary of the United States Council for Automotive Research LLC, whose members include Ford, General Motors, and Stellantis. In collaboration with the U.S. Department of Energy, the consortiumʼs mission is to develop advanced battery technologies for the next generation of electric vehicles.
