Development of Group 4 and 5 Oxide-based Electrocatalysts as Non-platinum Cathodes for PEFC

Abstract

In order to commercialize polymer electrolyte fuel cells widely, the development of a non-Pt catalyst for oxygen reduction reaction is essentially required. In this article, the necessity of non-Pt catalysts for low temperature fuel cells and our new trials using group 4 and 5 metal compounds are explained.