Patent ID: 8632920

Claim:
An air secondary battery comprising: an air cathode which has an air cathode layer containing a conductive material and an air cathode current collector which collects current of the air cathode layer; and an anode which has an anode layer containing an anode active material and an anode current collector which collects current of the anode layer; wherein the air cathode layer and the anode layer are placed so as to face each other, and a permeation preventing layer which is made of a nonaqueous polymer electrolyte and which prevents permeation of oxygen generated in the air cathode layer at a time of charge, is formed on a surface of a side of the anode layer of the air cathode layer; wherein the air cathode layer contains a nonaqueous polymer electrolyte, wherein the nonaqueous polymer electrolyte contained in the air cathode layer is fused with the nonaqueous polymer electrolyte contained in the permeation preventing layer at an interface between the air cathode layer and the permeation preventing layer, and an electrolyte layer made of a nonaqueous liquid electrolyte is formed between the permeation preventing layer and the anode layer, wherein the permeation prevention layer is different from the electrolyte layer.