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Research Article

Atomically thin defect-rich Ni-Se-S hybrid nanosheets as hydrogen evolution reaction electrocatalysts

Jianpeng Sun1, Xiangting Hu2, Zhaodi Huang1, Tianxiang Huang3, Xiaokang Wang1, Hailing Guo3, Fangna Dai1( ), Daofeng Sun1( )
College of Science, School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China
School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
The State Key Lab of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China
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Abstract

Facile design of economic-effective hydrogen evolution reaction (HER) catalysts with non-noble materials are promising for the production of renewable chemical fuels. Two-dimensional (2D) ultrathin transition metal dichalcogenides (TMDs) materials with large specific surface area and abundant catalytic active sites can significantly enhance their catalytic activities. Herein, we design and synthesize an atomically thin Ni-Se-S based hybrid nanosheet (NiSe1.2S0.8) via a simple solvothermal method, the thickness of NiSe1.2S0.8 nanosheets is only about 1.1 nm. Benefiting from the ultrathin nanostructure and rich defects, the optimal NiSe1.2S0.8 exhibits good electrocatalytic activity with the overpotential of 144 mV at -10 mA·cm-2, a small Tafel slope of 59 mV·dec-1, and outstanding catalytic stability in acid electrolyte for HER. The theoretical results show that hybrid electrocatalyst by S incorporation possesses the optimal adsorption free energy of hydrogen (ΔGH*). This study provides a simple method to synthesize a high-performance multicomponent electrocatalysts with the ultrathin nanostructures and abundant defects.

Keywords

hydrogen evolution reactionatomically thindefect-richNi-Se-Selectrocatalysts

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Nano Research
Volume 13 Issue 8,
August 2020
Pages 2056-2062
DOI: 10.1007/s12274-020-2807-8
Cite this article:
Sun J, Hu X, Huang Z, et al. Atomically thin defect-rich Ni-Se-S hybrid nanosheets as hydrogen evolution reaction electrocatalysts. Nano Research, 2020, 13(8): 2056-2062. https://doi.org/10.1007/s12274-020-2807-8
Topics:
Catalyst activityElectrocatalystsElectrolytesFree energy Hydrogen evolution reaction Hydrogen fuelsNanosheetsNickel compoundsSelenium compoundsTransition metals

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Received: 02 March 2020
Revised: 03 April 2020
Accepted: 12 April 2020
Published: 05 August 2020
© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020
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