Room‐Temperature All‐Liquid‐Metal Batteries Based on Fusible Alloys with Regulated Interfacial Chemistry and Wetting

Liquid metal batteries are regarded as potential electrochemical systems for stationary energy storage. Currently, all reported liquid metal batteries need to be operated at temperatures above 240 °C to maintain the metallic electrodes in a molten state. Here, an unprecedented room‐temperature liquid metal battery employing a sodium–potassium (Na–K) alloy anode and gallium (Ga)‐based alloy cathodes is demonstrated. Compared with lead (Pb)‐ and...