Negative electrode for alkaline storage battery, outer can for alkaline storage battery, and alkaline storage battery

摘要

Providing a negative electrode for alkaline storage batteries that can suppress the elution of iron and improve the long-term storage capacity of the battery even under conditions where the iron in the base material is likely to elute into the electrolyte, and can also suppress the decrease in initial capacity and the increase in internal resistance. To do. Even in the case where the surface has a thin conductive protective layer or when the conductive protective layer has a defect, even in conditions where iron in the base material is likely to elute into the electrolyte, magnesium or a magnesium compound is contained in the negative electrode for alkaline storage batteries. Contained (except when magnesium is included as a constituent element of the hydrogen storage alloy), it is possible to suppress the elution of iron, thereby improving the long-term storage capacity, reducing the initial capacity and reducing the internal resistance. The increase can also be suppressed.