Preparation of IrO₂-YSZ nano-composite films by MOCVD and their electrode properties

Abstract

Iridium oxide-YSZ(yttrium stabilized zirconia) nano-composite films were prepared on YSZ substrates by MOCVD. IrO₂-YSZ films consisted of spherical particles several nm in diameter. The electrical conductivity of nano-composite associated with the YSZ/electrode interface film was much higher than that of Pt film. The interface conductivity of the composite film with 18 mol% IrO₂, was almost the same as that of IrO₂ film being more than 100 times grater than that of conventional Pt paste electrode.