Direct synthesis of barium titanium oxyhydride promising for electrode material with hydrogen permeability

Barium titanium oxyhydride BaTiO3–xHx is a promising functional material that exhibits H–/e– mixed conduction and catalytic activity. Here we firstly report a direct synthesis of BaTiO3–xHx by mechanochemical method. The prepared polycrystalline sample was able to work as electrodes exhibiting hydrogen pearmeability.