TY - BOOK AU - Tamura,Y. AU - Taneda,K. AU - Ueda,M. AU - Ohtsuka,T. TI - Effect of oxide film on oxygen reduction current for the platinum-cobalt alloy electrodes in PEFC N2 - Effect of surface oxide on Pt-Co alloy electrodes on the oxygen reduction reaction (ORR)was investigated in 0.5 M sulfuric acid solution by electrochemistry, ellipsometry, laser Raman scattering spectroscopy, and XPS. The oxide as thick as 1-2 nm increases the overpotential of ORR and falls down efficiency of PEFC. The thickness of the oxide films is precisely determined by ellipsometry. The oxide film 1.9 nm thick was formed on Pt-50 mol UR - https://drive.google.com/file/d/1cGsLclFOc9OKTm0QwTuRBdZvWhTPvurQ/view?usp=drivesdk ER -