| 摘要 |
PURPOSE:To remove oxygen from the surfaces of alloy and enhance the initial characteristics by forming a plasma gas as a mixture of argon gas and hydrogen gas, and using it to dissolve a hydrogen storage alloy with plasma arc discharging. CONSTITUTION:To manufacture a hydrogen storage alloy electrode, a molten metal is prepared from the elements Mm, Ni, Co, Al, Mn by dissolving them with plasma arc discharging. In discharging, an argon-hydrogen mixture gas is used as plasma gas in which 10-40vol.% hydrogen gas is included. The hydrogen gas is energized in the plasma to cause hydrogen radicals to react with the oxygen contained at the surfaces of the hydrogen storage alloy to be removed in the form of water vapor. Thereby the hydrogen storage alloy is activated and the hydrogen storing/releasing reactions are conducted easily to lead to enhancement of the initial characteristics. |
