| 摘要 |
PURPOSE:To improve the discharge characteristic while to prevent deterioration of performance due to micro shortcircuit phenomena thus to lengthen the cycle life by constituting with process for crushing hydrogen occlusion alloy after thermal processing, process for surface treating with alkali aqueous solution and process for pressure integrating the alloy powder at least applied with water washing and drying with an electrode support together with binding agent. CONSTITUTION:Process for thermally treating hydrogen occlusion alloy which will reversibly occlude/discharge hydrogen under the temperature in the range of 950-1,250 deg.C then crushing finely and process for surface treating the crushed alloy powder with alkali aqueous solution are provided. While process for pressure integrating the alloy powder at least applied with water washing and drying together with binding agent (macromolecular compound) through an electrode support (foam metal, punching metal, expanded metal, etc.) is provided. Hydrogen occlusion alloy composed of 30-34wt% or rare earth metal (more than one kind of La, Ce, Nd, Sm, Pr, etc.), 40-60wt% of Ni and 6-30wt% of other metal is effective. |
