期刊
NATURE CATALYSIS
卷 5, 期 6, 页码 513-523出版社
NATURE PORTFOLIO
DOI: 10.1038/s41929-022-00797-0
关键词
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资金
- Office of Naval Research [N000141812155]
- Department of Energy Office of Science [DE-SC0012704]
- National Science Foundation Materials Research Science and Engineering Center programme through the University of California Irvine Center for Complex and Active Materials [DMR-2011967]
- National Science Foundation [CBET-1805022, CBET-2005250]
This study develops a binary experimental descriptor to predict the activity and stability of Pt-alloy oxygen reduction reaction catalysts. By directly correlating the binary experimental descriptor with the calculated Delta E-O, an experimentally validated Sabatier plot is proposed.
A critical technological roadblock to the widespread adoption of proton-exchange membrane fuel cells is the development of highly active and durable platinum-based catalysts for accelerating the sluggish oxygen reduction reaction, which has largely relied on anecdotal discoveries so far. While the oxygen binding energy Delta E-O has been frequently used as a theoretical descriptor for predicting the activity, there is no known descriptor for predicting durability. Here we developed a binary experimental descriptor that captures both the strain and Pt transition metal coupling contributions through X-ray absorption spectroscopy and directly correlated the binary experimental descriptor with the calculated Delta E-O of the catalyst surface. This leads to an experimentally validated Sabatier plot to predict both the catalytic activity and stability for a wide range of Pt-alloy oxygen reduction reaction catalysts. Based on the binary experimental descriptor, we further designed an oxygen reduction reaction catalyst wherein high activity and stability are simultaneously achieved.
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