Aqueous lithium-positive electrode for air secondary battery

摘要

PROBLEM TO BE SOLVED: To provide a two-functional positive electrode for an aqueous lithium-air secondary battery, in which OHions required for a charge reaction can be supplied and oxygen gas generated during charge can be discharged toward a direction of a gas diffusion layer, the supply of oxygen from ambient air required during discharge is not inhibited, and a reaction layer for discharge and a reaction layer for charge are lamented to be integrated.SOLUTION: A positive electrode for an aqueous lithium-air secondary battery includes: a gas diffusion layer 11; a water repellent discharge reaction layer 16 laminated on the gas diffusion layer 11; and a hydrophilic charge reaction layer 12 laminated on the water repellent discharge reaction layer 16. The water repellent discharge reaction layer 16 has permeability, reduces oxygen in air during a discharge reaction, and transfers oxygen generated in the hydrophilic charge reaction layer 12 during a charge reaction to the gas diffusion layer 11.SELECTED DRAWING: Figure 10