A prototype battery made by PolyPlus uses lithium metal as the anode and salt water as the cathode to power an LED.
A company based in Berkeley, CA, is developing lightweight, high-energy batteries that can use the surrounding air as a cathode. PolyPlus is partnering with a manufacturing firm to develop single-use lithium metal-air batteries for the government, and it expects these batteries to be on the market within a few years. The company also has rechargeable lithium metal-air batteries in the early stages of development that could eventually power electric vehicles that can go for longer in between charges.
Continue reading… “PolyPlus Developing Waterproof Lithium-Air Batteries”