Platinum-trimer decorated cobalt-palladium core-shell nanocatalyst with promising performance for oxygen reduction reaction

Sheng Dai, Jyh-Pin Chou, Kuan-Wen Wang, Yang-Yang Hsu, Alice Hu, Xiaoqing Pan and Tsan-Yao Chen ()
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Sheng Dai: University of California
Jyh-Pin Chou: City University of Hong Kong
Kuan-Wen Wang: National Central University
Yang-Yang Hsu: National Tsing Hua University
Alice Hu: City University of Hong Kong
Xiaoqing Pan: University of California
Tsan-Yao Chen: National Tsing Hua University

Nature Communications, 2019, vol. 10, issue 1, 1-10

Abstract: Abstract Advanced electrocatalysts with low platinum content, high activity and durability for the oxygen reduction reaction can benefit the widespread commercial use of fuel cell technology. Here, we report a platinum-trimer decorated cobalt-palladium core-shell nanocatalyst with a low platinum loading of only 2.4 wt% for the use in alkaline fuel cell cathodes. This ternary catalyst shows a mass activity that is enhanced by a factor of 30.6 relative to a commercial platinum catalyst, which is attributed to the unique charge localization induced by platinum-trimer decoration. The high stability of the decorated trimers endows the catalyst with an outstanding durability, maintaining decent electrocatalytic activity with no degradation for more than 322,000 potential cycles in alkaline electrolyte. These findings are expected to be useful for surface engineering and design of advanced fuel cell catalysts with atomic-scale platinum decoration.

Date: 2019
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DOI: 10.1038/s41467-019-08323-w

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