| 摘要 |
PURPOSE:To obtain an enclosed nickel-cadmium storage battery reducing a loss of cadmium, by building a porous unformed paste negative electrode holding a cadmium compound and a nickel positive electrode containing metallic cobalt into a vessel. CONSTITUTION:A negative electrode of 25-45% porosity unformed paste holding a cadmium compound of cadmium oxide, cadmium hydroxide, etc. and a positive electrode of nickel, in which a proper amount of metallic cobalt is added, are built in a cell vessel. Then the cobalt in the positive electrode is oxidized by an electric charge at the beginning, while the cadmium compound in the negative electrode is reduced to metallic cadmium by an electric quantity corresponding to oxidation of the cobalt. By this method, a forming process can be omitted and a loss of cadmium can be decreased, as a result a material cost in manufacture of an enclosed nickel-cadmium storage battery can be reduced. |
