OPEN TYPE ALKALINE STORAGE BATTERY

摘要

PURPOSE:To obtain larger discharge capacity than a rated capacity of 60 Ah and to retard decrease in capacity by specifying the ratio of the volume of hydrogen evolving electrode connected to the negative plate of an open type alkaline storage battery to the whole volume of a nonsintered cadmium negative plate to 1/100 or more. CONSTITUTION:In an open type alkaline storage battery, an electrode obtained by supporting mainly nickel hydroxide on a porous conductor in which a nickel layer exists on the surface of the bone is immersed in an electrolyte and electrically connected to a nonsintered cadmium negative plate. The ratio of the volume of the electrode supported with nickel hydroxide to the whole volume of the cadmium negative plate is limited to 1/100 or more. By preventing the surface of the hydrogen evolving electrode from covering with metallic cadmium, decrease in capacity of the battery in a high temperature atmosphere is prevented and the discharge capacity larger than a rated capacity of 60 Ah can be obtained.