| 摘要 |
PURPOSE:To improve large current discharge characteristic while maintaining good quick charging characteristic by employing a paste cadmium negative pole and such electrolyte as mainly composed of potassium hydroxide of specific concentration. CONSTITUTION:Paste cadmium negative pole applied with porous fluororesin layer is provided where the negative pole active substance is mainly composed of cadmium oxide and the filling density of active substance is brought to 1,100-1,400mAh/cc through pressurization prior to negative electrolysis which is executed to achieve metal cadmium of 400-600mAg/cc, while electrolyte mainly composed of potassium hydroxide having concentration of 6.5-8.0 normality is provided. Consequently, when employing metal cadmium of 400-600mAg/ cc per unit volume of negative pole, the conductivity of negative pole active substance is improved through increase of the concentration of metal cadmium while the inner resistance is reduced to improve larger current discharge characteristic. |
