Rechargeable Hydrogen Gas Batteries for Large-Scale Energy Storage

Large-scale energy storage is of significance to the integration of renewable energy into electric grid. Despite the dominance of pumped hydroelectricity in the market of grid energy storage, it is limited by the suitable site selection and footprint impact. Rechargeable batteries show increasing interests in the large-scale energy storage. However, the challenging requirement of low-cost materials with long cycle and calendar life restricts most battery chemistries for use in the grid storage. Recently we developed a new generation of rechargeable hydrogen gas batteries by exploiting catalytic hydrogen evolution/oxidation reactions as the anode, which offers negligible overpotentials, high rates and stable electrochemical performance. In this poster, I will introduce some exciting rechargeable hydrogen gas battery chemistries, including novel nickel-hydrogen gas, proton-hydrogen gas, chlorine-hydrogen gas, and among others. The excellent stability and low cost of the rechargeable hydrogen gas batteries demonstrate attractive characteristics for large-scale energy storage.