| 摘要 |
PURPOSE:To improve the utilization rate of active material so as to obtain a nickel electrode for alkaline cell with high performance, stabilized capacity and high productivity, by filling an alkali-resisting porous material with an active material which is provided with a specific covering layer over the surface of sodium hydroxide. CONSTITUTION:Aqueous solution of nickel nitrate is made to react with sodium hydroxide solution, then it is washed in water and dried to obtain nickel hydroxide. This nickel hydroxide is immersed in aqueous solution of nitric acid or cobalt sulfate then it is made to react with sodium hydroxide solution, washed in water to avoid oxidation and dried at about 85 deg.C or below. By this process, the surface of nickel hydroxide is covered with beta-Co(OH)2 layer. Thus the utilization rate of the active material is improved and a nickel electrode for alkaline cell with high performance, stabilized capacity and high productivity can be obatined. |
