MoS2 nanosheet-coated CoS2 nanowire arrays on carbon cloth as three-dimensional electrodes for efficient electrocatalytic hydrogen evolution

Jilin Huang; Dongman Hou; Yucheng Zhou; Weijia Zhou; Guoqiang Li; Zhenghua Tang; Ligui Li; Shaowei Chen

doi:10.1039/C5TA07234D

MoS₂ nanosheet-coated CoS₂ nanowire arrays on carbon cloth as three-dimensional electrodes for efficient electrocatalytic hydrogen evolution†

Jilin Huang,^a Dongman Hou,^b Yucheng Zhou,^a Weijia Zhou,*^a Guoqiang Li,^b Zhenghua Tang,^a Ligui Li^a and Shaowei Chen*^ac

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* Corresponding authors

^a New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou, Guangdong 510006, China
E-mail: eszhouwj@scut.edu.cn

^b State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, 381 Wushan Road, Guangzhou 510641, China

^c Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, California 95064, USA
E-mail: Shaowei@ucsc.edu

Abstract

The design and engineering of low-cost and high-efficiency electrocatalysts for the hydrogen evolution reaction (HER) has attracted increasing interest in renewable energy research. Herein, MoS₂ nanosheet-coated CoS₂ nanowire arrays supported on carbon cloth (MoS₂/CoS₂/CC) were prepared by a two-step procedure that entailed the hydrothermal growth of Co(OH)₂ nanowire arrays on carbon cloth followed by reaction with (NH₄)₂MoS₄ to grow an overlayer of MoS₂ nanosheets. Electrochemical studies showed that the obtained 3D electrode exhibited excellent HER activity with an overpotential of −87 mV at 10 mA cm⁻², a small Tafel slope of 73.4 mV dec⁻¹ and prominent electrochemical durability. The results presented herein may offer a new methodology for the design and engineering of effective multilevel structured catalysts for the HER based on earth-abundant components.

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Article information

DOI: https://doi.org/10.1039/C5TA07234D
Article type: Paper
Submitted: 10 Sep 2015
Accepted: 02 Oct 2015
First published: 05 Oct 2015

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J. Mater. Chem. A, 2015,3, 22886-22891

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MoS₂ nanosheet-coated CoS₂ nanowire arrays on carbon cloth as three-dimensional electrodes for efficient electrocatalytic hydrogen evolution

J. Huang, D. Hou, Y. Zhou, W. Zhou, G. Li, Z. Tang, L. Li and S. Chen, J. Mater. Chem. A, 2015, 3, 22886 DOI: 10.1039/C5TA07234D

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Journal of Materials Chemistry A