Electrochemical Properties of Iron Naphthalocyanine on Carbon Black for O 2 Reduction and Evolution in Alkaline Media and Applicability to Air Cathodes

Abstract

The synthesis, optical spectra, and x‐ray pattern of iron naphthalocyanine as the pure powder are reported. The electrochemical properties for reduction and evolution of this compound loaded on carbon black supports have been determined by ultrathin and rotating ring‐disk electrode techniques. While on the carbon black support reduction occurs through a two electron pathway followed by decomposition, four electron reduction is obtained on the loadings with a high efficiency. Stability tests proved their applicability as useful catalysts as the air cathode in metal‐air generators.