ELECTRODE CATALYST AND OXYGEN REDUCTION ELECTRODE FOR POSITIVE ELECTRODE USING THE ELECTRODE CATALYST

摘要

An electrode catalyst for an oxygen reduction electrode for use in a cathode of a polymer electrolyte fuel cell, produced by oxidizing ZrCN, wherein ZrCN and ZrO 2 are detected by X-ray diffraction of the electrode catalyst, the electrode catalyst has an ionization potential of 5.0 to 6.0 eV, and ZrO 2 is detected by X-ray photoelectron spectroscopy of the electrode catalyst.