ZINC NEGATIVE ELECTRODE PLATE FOR ALKALINE BATTERY

摘要

PURPOSE:To improve the life performance by uniformly distributing the fine copper powder around a copper basic current collector. CONSTITUTION:The zinc oxide powder 100 pts. and nylon short fibers 0.2 pts. with the length 1mm are mixed with propylene glycol 30 pts. into a paste shape. It is kneaded with a 60%-aqueous dispersion solution 3ml of polytetrafluoroethylene powder and pressed to a copper punching metal with the thickness 0.1mm and dried at 150 deg.C, and it is further pressed to obtain a negative electrode plate of 3X15X52mm with the theoretical capacity 700mAh of zinc oxide. Two Ni plates and a counter electrode are anode-excite for 22min with 5mA in a 3M-potassium hydroxide aqueous solution, then they are cathode-excited with the same current, and they are washed with hot water and dried. Copper fine grains are uniformly distributed on the surface of the copper grid of the negative electrode plate, thus the life performance can be improved.