POSITIVE ELECTRODE FOR METAL AIR SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide an air electrode (positive electrode) for a safe battery pack whose charging voltage is stable even during charging and that has no electrolyte leakage and such.SOLUTION: The positive electrode for a metal air secondary battery includes: a gas diffusion layer 1; an oxygen generation catalyst layer 2 laminated on the gas diffusion layer 1; and a hydrophilic porous layer 3 laminated on the oxygen generation catalyst layer 2, wherein the hydrophilic porous layer 3 is disposed in a state where the hydrophilic porous layer 3 is in contact with an alkaline electrolyte.