METAL OXIDE ELECTRODE CATALYST, USE THEREOF, AND METHOD FOR PRODUCING METAL OXIDE ELECTRODE CATALYST

摘要

Disclosed is a metal oxide electrode catalyst having high oxygen reduction ability, which is useful as an alternative material for a platinum catalyst. Specifically disclosed is a metal oxide electrode catalyst which is composed of a metal oxide (Y) obtained by heat treating a metal compound (X) in an oxygen-containing atmosphere. This metal oxide electrode catalyst is characterized in that the valence of the metal compound (X) is lower than the valence of the metal oxide (Y).