Silicon–air batteries are a new battery technology invented by a team led by Prof. Ein-Eli at the Grand Technion Energy Program at the Technion – Israel Institute of Technology. Silicon–air battery technology is based on electrodes of oxygen and silicon. Such batteries can be lightweight, with a high tolerance for both extremely dry conditions and high humidity. Like other anode-air batteries, in particular metal-air batteries, silicon–air batteries rely on atmospheric oxygen for their cathodes; they accordingly do not include any cathode materials in their structures, and this permits economies in cost and weight.