ALKALI CELL

摘要

An alkali cell having a positive electrode composite material containing manganese dioxide and nickel oxyhydroxide as active materials respectively, a negative electrode containing zinc as an active material, and an alkaline electrolyte, characterized in that the manganese dioxide has a potential relative to a mercury/mercury oxide electrode of 270 mV or more in an aqueous potassium hydroxide solution having a KOH concentration of 40 wt %.