| 摘要 |
PURPOSE:To improve an active material utilization rate by mixing CoO powder with the active material powder in a eutectic state of a fixed amount of nickel hydroxide, cobalt hydroxide and cadmium hydroxide. CONSTITUTION:A water solution consisting of 92mol% of nickel sulphate, 5mol% of cobalt sulphate and 3mol% of cadmium sulphate is dropped into a 30wt% of caustic potash water solution for being changed into hydroxide followed by being washed and dried to be made into an active material. Next, 10wt% of CoO powder and 90wt% of said active material in a eutectic state are crashed and mixed and then water and carboxymethylcellulose are added for being made into a pasty state. Said paste is filled into a prescribed nickel fiber sintered body for being made into a positive electrode 0.7mm thick by drying and thickness regulation. Accordingly, the active material utilization rate of the positive electrode can be improved. |
