Amprius Technologies
Amprius makes some of the highest energy-density cells on the market, built around its own silicon anode. That extra range has made it a favoured supplier for drones, high-altitude aircraft and defence programmes.
Profile
Amprius Technologies is a US battery manufacturer developing high-energy lithium-ion cells built around a silicon-nanowire anode. Founded on technology aimed at raising energy density well beyond conventional graphite-anode cells, it is headquartered in California.
The company produces pouch cells with very high gravimetric and volumetric energy density, and states its cells can charge to 80% in a matter of minutes. Its silicon-anode approach is designed to reduce the swelling that has historically limited silicon in batteries.
Amprius's cells are aimed particularly at demanding applications such as aviation, including high-altitude unmanned aircraft, where energy density and weight are critical. It is publicly listed and among the more prominent silicon-anode developers.
Written from the public record, including the company’s own published figures, which are attributed as such. Company details change often, so confirm anything material with the company. Suggest a correction