CADMIUM NEGATIVE ELECTRODE FOR ALKALINE STORAGE BATTERY

摘要

PURPOSE:To prevent an internal pressure increase of a battery in quick charge by using a negative active material containing specified amounts of antimony oxide and magnesium compound. CONSTITUTION:An active material layer mainly comprising cadmium oxide or hydroxide and containing antimony oxide and magnesium compound is formed on the surface of a conductive core. The total amount of the antimony oxide and the magnesium compound is limited to 10 wt.% or less of the total active material. The antimony oxide is at least 0.5 wt.% and the magnesium compound is at least 1 wt.% of the total active material. By this composition, the oxygen gas absorbing capability of a cadmium negative electrode is increased and an internal pressure increase of a battery in quick charge can be prevented.