| 摘要 |
PURPOSE:To increase quick discharge performance of a cathode by washing out concentrated raw salt in pores in a substrate after finishing intermediate drying process in cathode plate impregnation process to retard blockage of pores, and impregnating active materials. CONSTITUTION:A sintered nickel substrate is immersed in a raw salt solution, dried at temperature higher than heat decomposition temperature of the raw salt to concentrate the raw salt solution. The surfaces of the sintered nickel particles are corroded with concentrated heated salt and the corroded layer is converted into active material layer. The substrate is immersed in warm water or warm dilute raw salt solution to wash out the concentrated raw salt solution left in pores in the substrate. Thereby, the amount of hydroxide of the raw salt to be produced in the next alkali-immersion process is controlled to retard blockage of pores. After that, active material is impregnated to continue impregnation process of a cathod plate for alkaline storage battery. Therefore, formation of coarse active material is prevented, and quick discharge performance of the cathode can be improved. |
