An efficient molybdenum disulfide/cobalt diselenide hybrid catalyst for electrochemical hydrogen generation

Min-Rui Gao, Jin-Xia Liang, Ya-Rong Zheng, Yun-Fei Xu, Jun Jiang, Qiang Gao, Jun Li and Shu-Hong Yu ()
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Min-Rui Gao: Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China
Jin-Xia Liang: Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University
Ya-Rong Zheng: Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China
Yun-Fei Xu: Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China
Jun Jiang: Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China
Qiang Gao: Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China
Jun Li: Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University
Shu-Hong Yu: Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China

Nature Communications, 2015, vol. 6, issue 1, 1-7

Abstract: Abstract The electroreduction of water for sustainable hydrogen production is a critical component of several developing clean-energy technologies, such as water splitting and fuel cells. However, finding a cheap and efficient alternative catalyst to replace currently used platinum-based catalysts is still a prerequisite for the commercialization of these technologies. Here we report a robust and highly active catalyst for hydrogen evolution reaction that is constructed by in situ growth of molybdenum disulfide on the surface of cobalt diselenide. In acidic media, the molybdenum disulfide/cobalt diselenide catalyst exhibits fast hydrogen evolution kinetics with onset potential of −11 mV and Tafel slope of 36 mV per decade, which is the best among the non-noble metal hydrogen evolution catalysts and even approaches to the commercial platinum/carbon catalyst. The high hydrogen evolution activity of molybdenum disulfide/cobalt diselenide hybrid is likely due to the electrocatalytic synergistic effects between hydrogen evolution-active molybdenum disulfide and cobalt diselenide materials and the much increased catalytic sites.

Date: 2015
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DOI: 10.1038/ncomms6982

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