Water-based battery stores solar and wind energy

Science Daily   April 30, 2018
A team of researchers in the US (Stanford University, SLAC National Accelerator Laboratory) has developed a rechargeable manganese–hydrogen battery, where the cathode is cycled between soluble Mn2+ and solid MnO2 with a two-electron reaction, and the anode is cycled between H2 gas and H2O through catalytic reactions of hydrogen evolution and oxidation. They are confident they can take this table-top technology up to an industrial-grade system that could charge and recharge up to 10,000 times, creating a grid-scale battery with a useful lifespan well over a decade… read more. TECHNICAL ARTICLE