| 摘要 |
PROBLEM TO BE SOLVED: To suppress the alloy corrosion of a hydrogen storage alloy negative. electrode and lengthen the cycle life by adding ytterbium or a ytterbium compound to a nickel hydroxide positive electrode. SOLUTION: An alkaline storage battery has a positive electrode prepared by adding ytterbium or a ytterbium compound to an active material whose main component is nickel hydroxide. The ytterbium or the ytterbium compound is preferable to exist in the free state from the active material whose main component is nickel hydroxide. The ytterbium or the ytterbium compound is preferable to exist in the positive electrode in the form of an oxide or a hydroxide. |
