POSITIVE ELECTRODE ACTIVE MATERIAL AND POSITIVE ELECTRODE PLATE FOR NICKEL - HYDROGEN BATTERY, NICKEL - HYDROGEN BATTERY, AND MANUFACTURING METHOD FOR NICKEL - HYDROGEN BATTERY

摘要

PPROBLEM TO BE SOLVED: To provide a nickel - hydrogen battery together with its associated items as an improvement of the conventional technique involving such problems that the cobalt component makes elution at the time of discharging to result in impairing of the capacity characteristics and/or deep discharge restoring characteristics at the time of quick charging and discharging, that the electricity collecting force in the thickness direction of the electrode plate is weak to cause a drop of the conductiveness of the positive electrode plate if it is a one using a processed foil as the core and also a drop of the battery capacity at the time of quick discharging, and that the internal pressure of the battery rises due to hydrogen gas at the time of quick charging. PSOLUTION: The surface of the positive electrode active material for the nickel - hydrogen battery is covered with a tin oxide series conductive substance or subjected to nickel plating, wherein the covering layer on the surface of the nickel-covered active material includes a rubber component. PCOPYRIGHT: (C)2004,JPO