METAL-AIR SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a metal-air secondary battery in which charge overvoltage is reduced in order to improve conversion efficiency of a secondary battery.SOLUTION: A metal-air secondary battery includes: a negative electrode member for storing/releasing metal ions; a positive electrode for ionizing oxygen; and a separator into which an electrolyte installed between the negative electrode member and the positive electrode member is impregnated. The positive electrode member includes: a base material; an Fe-based oxide catalyst; a carbon material catalyst including at least one of Ru and Pd; and a binder.