期刊
ACS CATALYSIS
卷 7, 期 5, 页码 3384-3387出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.7b00494
关键词
water-oxidation catalysis; homogeneous electrocatalysis; oxygen-evolution reaction; OER; copper electrocatalysis
资金
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences as part of the Argonne-Northwestern Solar Energy Research (ANSER) Energy Frontier Research Center [DE-SC0001059]
- National Science Foundation Graduate Research Fellowship Program [DGE1122492]
- TomKat Charitable Trust
The copper(II) complex Cu(pyalk)(2) (pyalk = 2-pyridyl-2-propanoate) is a robust homogeneous water-oxidation electrocatalyst under basic conditions (pH > 10.4). Water oxidation occurs at a relatively low overpotential for copper of 520-580 mV with a turnover frequency of similar to 0.7 s(-1). Controlled potential electrolysis experiments over 12 h at 1.1 V vs NHE resulted in the formation of >30 catalytic turnovers of O-2 with only similar to 20% catalyst degradation. The robustness of the catalyst under fairly harsh conditions and the low overpotential further highlight the oxidation resistance and strong donor character of pyalk.
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