Nature Catalysis
08 January 2018
General synthesis and definitive structural identification of MN4C4 single-atom catalysts with tunable electrocatalytic activities
Huilong Fei1,†, Juncai Dong2,†, Yexin Feng3, Christopher S. Allen4,5, Chengzhang Wan1, Boris Volosskiy1, Mufan Li1, Zipeng Zhao6, Yiliu Wang1, Hongtao Sun1, Pengfei An2, Wenxing Chen7, Zhiying Guo2, Chain Lee1, Dongliang Chen2, Imran Shakir8*, Mingjie Liu9, Tiandou Hu2, Yadong Li7, Angus I. Kirkland4,5, Xiangfeng Duan1,10* ,Yu Huang6,10*
1 Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA.
2 Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China.
3 State Key Laboratory of Chemo/Biosensing and Chemometrics and School of Physics and Electronics, Hunan University, Changsha, China.
4 Departments of Materials, University of Oxford, Oxford, UK.
5 Electron Physical Sciences Imaging Centre (ePSIC), Diamond Light Source, Didcot, Oxford, UK.
6 Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, USA.
7 Department of Chemistry, Tsinghua University, Beijing, China.
8 Sustainable Energy Technologies Centre, College of Engineering, King Saud University, Riyadh, Saudi Arabia.
9 Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, USA.
10 California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA, USA.
† Huilong Fei and Juncai Dong contributed equally to this work.
10.1038/s41929-017-0008-y
A lack of insight into the structure of single-atom electrocatalysts holds back their rational design. Now, Fei et al. report the synthesis of single-atom nickel, iron and cobalt electrocatalysts in nitrogen-doped graphene. In-depth characterization identifies the exact structure of the active sites and allows a theoretical prediction of their relative activities in oxygen evolution reactions – a structure–activity relationship that is supported by subsequent experiments.
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