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The effect of C2H2 on the oxygen reduction reaction (ORR) for a commercial Pt/C catalyst was investigated using rotating ring disk electrode (RRDE) technique in acidic solution. This study was undertaken to provide insight into the mechanism of C2H2 contamination of the cathodes in proton exchange membrane fuel cells. The cyclic voltammetry results show a high C2H2 coverage on the Pt surface and an...
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