Dopant triggered atomic configuration activates water splitting to hydrogen

Rui Wu, Jie Xu, Chuan-Lin Zhao, Xiao-Zhi Su, Xiao-Long Zhang, Ya-Rong Zheng, Feng-Yi Yang, Xu-Sheng Zheng, Jun-Fa Zhu, Jun Luo, Wei-Xue Li, Min-Rui Gao () and Shu-Hong Yu ()
Additional contact information
Rui Wu: University of Science and Technology of China
Jie Xu: Soochow University
Chuan-Lin Zhao: University of Science and Technology of China
Xiao-Zhi Su: Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, CAS
Xiao-Long Zhang: University of Science and Technology of China
Ya-Rong Zheng: University of Science and Technology of China
Feng-Yi Yang: University of Science and Technology of China
Xu-Sheng Zheng: University of Science and Technology of China
Jun-Fa Zhu: University of Science and Technology of China
Jun Luo: Tianjin University of Technology
Wei-Xue Li: University of Science and Technology of China
Min-Rui Gao: University of Science and Technology of China
Shu-Hong Yu: University of Science and Technology of China

Nature Communications, 2023, vol. 14, issue 1, 1-9

Abstract: Abstract Finding highly efficient hydrogen evolution reaction (HER) catalysts is pertinent to the ultimate goal of transformation into a net-zero carbon emission society. The design principles for such HER catalysts lie in the well-known structure-property relationship, which guides the synthesis procedure that creates catalyst with target properties such as catalytic activity. Here we report a general strategy to synthesize 10 kinds of single-atom-doped CoSe2-DETA (DETA = diethylenetriamine) nanobelts. By systematically analyzing these products, we demonstrate a volcano-shape correlation between HER activity and Co atomic configuration (ratio of Co-N bonds to Co-Se bonds). Specifically, Pb-CoSe2-DETA catalyst reaches current density of 10 mA cm−2 at 74 mV in acidic electrolyte (0.5 M H2SO4, pH ~0.35). This striking catalytic performance can be attributed to its optimized Co atomic configuration induced by single-atom doping.

Date: 2023
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DOI: 10.1038/s41467-023-37641-3

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