| 摘要 |
PURPOSE: To provide a nickel electrode having a high utilizing ratio of positive electrode active material and capable of ensuring a stable battery capacity, and a manufacturing method in which such a nickel electrode can be easily manufactured. CONSTITUTION: A nickel electrode has a three-dimensional porous metal base 1 and a nickel hydroxide particle 2 filled and supported in the metal base 1, and the surface of the nickel hydroxide particle 2 is covered with cobalt oxyhydroxide 3. A method for manufacturing such a nickel electrode comprises a process for adding an alkali aqueous solution to a cobalt sulfide aqueous solution in which the nickel hydroxide particle is dispersed followed by stirring to cover the nickel hydroxide particle surface with a cobalt compound; a process for separating the nickel hydroxide particle covered with the cobalt compound, and heating and drying it to oxidize the cobalt compound into cobalt oxyhydroxide; a process for filling and supporting a paste material containing the nickel hydroxide particle covered with cobalt oxyhydroxide in the three- dimensional porous metal base; and a process for drying the filled and supported paste material. |
