TANTALUM-CONTAINING TIN OXIDE FOR FUEL CELL ELECTRODE MATERIAL

摘要

A tantalum-containing tin oxide for a fuel cell electrode material, comprising tin oxide containing tantalum. The tantalum content is 0.001-30 mol%. When the tantalum-containing tin oxide is measured by x-ray diffraction, the value for [ITa205/ISnO2]DOPE is smaller than the value for [ITa205/ISnO2]MIX. In addition to the tin oxide particles containing tantalum, ideally a tantalum oxide is present on the surface of the particles. Also, ideally the tantalum oxide is crystalline.