BUTTON TYPE AIR-ZINC BATTERY

摘要

PROBLEM TO BE SOLVED: To prevent an air electrode and a separator from being stretched to a negative electrode and conduct a stable large-current discharge by invariably pressing the air electrode with a pressing member having a flat face and an inverted T-shaped cross section. SOLUTION: The opening section of a positive electrode case 8 is mechanically caulked inward and sealed via an insulating gasket 3 to prevent the leakage of a built-in electrolyte in this button type air-zinc battery. Since an air electrode 5 is invariably pressed by a pressing member 11, the air electrode 5 and a separator 4 can be prevented from being stretched to a negative electrode 2 side by the caulking pressing force when the battery is sealed. Such problems can be resolved that the electrolyte permeates between the catalyst layer of the air electrode 5 and a water-repellent film when the battery is stored and discharged and the discharge maintaining voltage is reduce in a large- current discharge.