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This paper reports the effects of Co 2+ contamination on PEM fuel cell performance as a function of Co 2+ concentration and operating temperature. A significant drop in fuel cell voltage occurred when Co 2+ was injected into the cathode air stream, and Co 2+ contamination became more severe with decreasing temperature. To investigate in detail the mechanism of Co ...
The oxygen reduction reaction (ORR) catalyzed by Pt was studied in the presence of Co 2+ using cyclic voltammetry (CV), rotating disk electrode (RDE), and rotating ring-disk electrode (RRDE) techniques in an effort to understand fuel cell cathode contamination caused by Co 2+ . Findings indicated that Co 2+ could weakly adsorb on the Pt surface, resulting in a slight change...
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