HYDROGEN ABSORBING ELECTRODE AND PRODUCTION METHOD THEREOF

摘要

A hydrogen absorbing electrode using a hydrogen absorbing alloy containing at least one kind of transition metals belonging to Group VIIa, VIII or Ib of the periodic table at a predetermined proportion. The surface of the hydrogen absorbing alloy is a rich layer containing a greater amount transition metal than the predetermined proportion. Because the rich layer exists, activation at the initial stage of charge/discharge is not necessary. Accordingly, it can be effectively utilized for a nickel-hydride secondary cell. $$