| 摘要 |
PURPOSE:To prevent the pulverization and dissolution of a hydrogen storage alloy to increase the life of an electrode by accommodating a hydrogen storage alloy in a pressure vessel, performing hydrogenation with hydrogen gas and dehydrogenation to form fine powder, separating the powder except for the fine powder, and using only the fine powder for a hydrogen storage electrode. CONSTITUTION:A hydrogen storage alloy 1 is accommodated in a pressure vessel 2, and hydrogenation with hydrogen gas and dehydrogenation are applied to the alloy 1 to form the fine powder. The alloy powder except for the fine powder is separated, and only the fine powder is used for a hydrogen storage electrode. The use of the fine powder having a particle size of 100mu or less obtained by sieving is preferable. By hydrogenation with hydrogen gas, the fine powder is easily obtained, and more pulverization of the alloy is prevented even if charge-discharge of the hydrogen storage electrode is repeated. The dissolution of impurities can be prevented and the life of the hydrogen storage electrode is increased. |
