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Surface Species Alteration and Oxygen Reduction Reaction Enhancement of Pd[BOND]Co/C Electrocatalysts Induced by Ceria Modification



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The effect of reduction temperature and CeO2 addition on the activity of PdCo/C alloy catalysts (see scheme) toward the oxygen reduction reaction (ORR) is investigated. By combining X-ray analysis and temperature-programmed reduction with electrochemical measurements, the relationship between phase structure, surface information and catalytic activity toward ORR of the non-Pt Pd[BOND]Co catalysts is elucidated.