Method of manufacturing hydrogen-absorbing alloy electrode

The method of manufacturing a hydrogen-absorbing alloy electrode comprises: a step of reducing an oxide or hydroxide residing on the surface of a hydrogen-absorbing alloy particle while the alloy particle is held in an atmosphere of a hydrogen gas maintained at a temperature where absorbing of the hydrogen gas does not substantially occur; a step of naturally cooling atmosphere from the temperature where absorbing of the hydrogen gas does not substantially occur to the temperature where the equilibrium hydrogen pressure of the hydrogen-absorbing alloy is equal to the hydrogen pressure in the atmosphere of the hydrogen gas and thereafter vacuumevacuating the atmosphere of the hydrogen gas so that the hydrogen-absorbing alloy particle is cooled to room temperature while the hydrogen gas is exhausted; a step of exhausting the hydrogen gas and cooling the atmosphere to room temperature and thereafter introducing at least one kind of gas selected from the group consisting of argon, nitrogen and carbon dioxide into the atmosphere, thereby returning the atmosphere to normal atmospheric pressure; and a step of immersing the hydrogen-absorbing alloy particle thus acquired in solution containing an oxidation inhibiting agent.