Disclosed is a metal-air battery which can have larger charge-discharge capacity compared to those of conventional metal-air batteries. The metal-air battery (1) comprises a negative electrode (2) comprising one metal selected from the group consisting of ...

Electrochemical storage device (1) comprises a rechargeable fuel cell (2) having an oxidizable and a reducible material, a redox couple from a fuel and a fuel product and two electrodes. The fuel cell in a discharging state oxidizes the material by the fue...

A main object of the present invention is to provide an air cathode with great discharged capacity per unit area. The present invention solves the above-mentioned problems by providing an air cathode used for a nonaqueous air battery, comprising: an air ca...