Self-discharge of Fe–Ni alkaline batteries

The effect of FeS and PbS on capacity and self-discharge of an iron porous electrode used in a Fe–Ni battery was investigated. Addition of 1 wt.% FeS or 1 wt.% PbS promotes a significant increase in capacity and inhibits the self-discharge of the iron electrode. This effect is most significant in the presence of PbS.