Electrochemical deposition as a universal route for fabricating single-atom catalysts

Zhirong Zhang, Chen Feng, Chunxiao Liu, Ming Zuo, Lang Qin, Xupeng Yan, Yulin Xing, Hongliang Li, Rui Si, Shiming Zhou () and Jie Zeng ()
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Zhirong Zhang: University of Science and Technology of China
Chen Feng: University of Science and Technology of China
Chunxiao Liu: University of Science and Technology of China
Ming Zuo: University of Science and Technology of China
Lang Qin: University of Science and Technology of China
Xupeng Yan: University of Science and Technology of China
Yulin Xing: University of Science and Technology of China
Hongliang Li: University of Science and Technology of China
Rui Si: Shanghai Institute of Applied Physics, Chinese Academy of Sciences
Shiming Zhou: University of Science and Technology of China
Jie Zeng: University of Science and Technology of China

Nature Communications, 2020, vol. 11, issue 1, 1-8

Abstract: Abstract Single-atom catalysts (SACs) exhibit intriguing catalytic performance owing to their maximized atom utilizations and unique electronic structures. However, the reported strategies for synthesizing SACs generally have special requirements for either the anchored metals or the supports. Herein, we report a universal approach of electrochemical deposition that is applicable to a wide range of metals and supports for the fabrication of SACs. The depositions were conducted on both cathode and anode, where the different redox reactions endowed the SACs with distinct electronic states. The SACs from cathodic deposition exhibited high activities towards hydrogen evolution reaction, while those from anodic deposition were highly active towards oxygen evolution reaction. When cathodically- and anodically-deposited Ir single atoms on Co0.8Fe0.2Se2@Ni foam were integrated into a two-electrode cell for overall water splitting, a voltage of 1.39 V was required at 10 mA cm−2 in alkaline electrolyte.

Date: 2020
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DOI: 10.1038/s41467-020-14917-6

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