Nature Communications (Apr 2023)

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,
  • Shu-Hong Yu

DOI
https://doi.org/10.1038/s41467-023-37641-3
Journal volume & issue
Vol. 14, no. 1
pp. 1 – 9

Abstract

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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.