MnO₂ catalyzed carbon electrodes for dioxygen reduction in concentrated alkali

Abstract

A process to deposit γ-MnO₂ catalytic oxide onto coconut-shell charcoal substrate is described. Current-potential curves for electroreduction of dioxygen with electrodes fabricated from this catalyzed substrate are obtained in 6M KOH under ambient conditions. The performance of these electrodes is competitive with platinized carbon electrodes.