Journal
CHEMICAL COMMUNICATIONS
Volume 56, Issue 5, Pages 794-797Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9cc09007j
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Funding
- Natural Science Foundation of Jilin Province [20180101291JC]
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Development of high-efficiency single-atom catalysts (SACs) for the oxygen evolution reaction (OER) is challenging. Herein, we report a facile annealing strategy to construct an atomically dispersed cobalt- and nitrogen-codoped graphene catalyst for high-efficiency OER. The as-prepared 0.7-Co@NG-750 electrocatalyst requires an ultra-low onset overpotential of approximately 210 mV on a glassy carbon electrode in both 1.0 M KOH and 0.1 M KOH solutions. The density functional theory (DFT) calculations reveal that the theoretical overpotential on Co-N-4 and Co-N2C2 sites is 0.41 and 0.53 V, respectively, and these might be efficient active sites for electrocatalytic water oxidation.
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