Cathodic Polarization of the Manganese Dioxide Electrode in Alkaline Electrolytes

Abstract

Polarization of is measured at various constant currents in electrolytes in reduction from to . Two limiting currents are observed in high‐current discharges of , one around and the other after . The former is attributed to formation of a lower oxide structure on the surface of structure. Around , a Tafel relation is observed for and values are obtained. The polarization is always greater in than in under the same discharge conditions.