AMPX

Amprius Technologies, Inc.

A maker of high-energy lithium-ion batteries with silicon anodes instead of the usual graphite, Amprius builds power packs for drones, high-altitude aircraft, and electric aviation — its SiCore and SiMaxx platforms have been tested by hundreds of customers including Airbus and the U.S. Army. It grew out of Stanford research, founded in 2008 by professor Yi Cui, and its name blends "amp" (electric current) with "prius," the Latin word for "first" or "go before."