| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydrogen storage alloy electrode with its high capacity, efficient discharge characteristics, and cycle characteristics. SOLUTION: Hydrogen storage alloy granules are reduced with hydrogen gas or etched with fluoride hydrogen acid solution so that the thickness of an oxide film on the alloy surface is 0.15 micrometer or less, and this surface is applied with a mechanical stress or plating such as a ball mill so that nickel powder or porous nickel film is adhered thereto. Thus, an electrode is constituted by alloy granule adhered with Ni contributing to electrode activity. Further, characteristics can be improved by thermally treating this Ni-adhered alloy. |
