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Keywords:

  • ceria;
  • palladium;
  • cobalt;
  • oxygen reduction reaction;
  • surface chemistry
Thumbnail image of graphical abstract

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.