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Electrocatalytic oxygen evolution with a cobalt complex

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Abstract

The development of an earth-abundant, first-row water oxidation catalyst that operates at a high TOF and a low overpotential remains a fundamental chemical challenge. Cobalt complexes are important members of water oxidation catalysts. Herein, we report a cobalt-based robust homogeneous water oxidation catalyst, which can electrocatalyze water oxidation at a high pH and a low overpotential (η = 520 mV) in phosphate buffer. This homogeneous system exhibits a high turnover frequency (about 5 s−1) of catalyzing water oxidation to produce oxygen at η = 720 mV. We speculate the mechanism of the reaction that O–O bond formation prefers a HO–OH coupling in catalytic water oxidation.

Graphical abstract: Electrocatalytic oxygen evolution with a cobalt complex

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Publication details

The article was received on 28 Sep 2017, accepted on 03 Nov 2017 and first published on 03 Nov 2017


Article type: Paper
DOI: 10.1039/C7DT03653A
Citation: Dalton Trans., 2017, Advance Article
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    Electrocatalytic oxygen evolution with a cobalt complex

    H. Shi, X. Li, F. Wu and W. Yu, Dalton Trans., 2017, Advance Article , DOI: 10.1039/C7DT03653A

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