| 摘要 |
PURPOSE:To improve charging efficiency of a positive electrode in a high- temperature condition by providing a positive electrode including nickel hydroxide powder, and cerium compound or neodymium compound. CONSTITUTION:For a positive electrode 1, paste is formed to include nickel hydroxide powder, cerium compound or neodymium compound, conductive agent. binding agent, and water, the paste is filled in an alikali-resistant metal porous body, it is dried, pressurized and moulded, and it is cut. For a negative electrode 2, conductive agent is added to negative electrode active material. it is kneaded with binding agent and water to form paste, and the paste is filled on a conductive board to be dried and moulded. An oxygen overvoltage of the positive electrode 1 in a high-temperature condition can thus be set high, and charging reaction of nickel hydroxide powder goes on, thereby generation quantity of NiOOH is increased to improve charging efficiency of the positive electrode 1. |
