| 摘要 |
PURPOSE:To prevent weakening of a base plate due to corrosion by making filling operation with active material after generating cobalt hydroxide on the surface of sintered nickel base plate and performing positive pole oxidation to cover the base plate surface with a cobalt oxide layer. CONSTITUTION:Cobalt hydroxide is generated on the surface of a sintered nickel base plate and cobalt hydroxide is changed into cobalt oxide by positive pole oxidation to cover the base plate surface with cobalt oxide layer. The base plate is then impregnated with acid nickel salt and undergoes filling operation with active material accompanied by impregnation with acid nickel salt which is made active through alkali treatment or the like, to form a nickel hydroxide electrode for alkaline storage battery. The cobalt oxide layer is made to serve as a protective coat to prevent corrosion and weakening of the base plate caused by acid nickel salt of high temperature and high concentration. Thus discharge characteristics can be improved in addition to the improvement in the efficiency of the operation of filling with active material. |
