Metal air cathode: manganese oxide contained in octahedral molecular sieve

摘要

An oxygen reduction electrode, e.g., an air cathode, comprising manganese oxides having octahedral molecular sieve structures as active catalyst materials and use of such an electrode as a component of a metal-air cell.

主权项

1. A metal-air electrochemical cell comprising:
an anode; an aqueous alkaline electrolytic solution; and an oxygen reduction electrode comprising a mixed manganese oxide catalyst comprising an octahedral molecular sieve structureand Mn2O3 wherein the manganese oxide in the octahedral molecular sieve structure is cryptomelane the manganese having an average oxidation state between 3.19 and 3.59.