期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 691, 期 -, 页码 698-704出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.08.305
关键词
Graphene-like WSe2; Solvothermal method; Electrocatalyst; Hydrogen evolution reaction
资金
- National Natural Science Foundation of China [51372033, 51202022, 61378028]
- Fundamental Research Funds for the Central Universities [ZYGX2013Z001]
- National High Technology Research and Development Program of China [2015AA034202]
- 111 Project [B13042]
- Sino-German Cooperation PPP Program of China
The development of efficient catalysts for electrochemical hydrogen evolution is essential for energy conversion. As a new kind of two-dimensional semiconductor, tungsten selenide (WSe2) has emerged as a promising electrocatalyst for hydrogen evolution reaction (HER). Herein, graphene-like few-layered WSe2 nanosheets are synthesized through a facile, low-cost and one-pot solvothermal reaction, which has been confirmed by XRD, Raman, XPS, SEM and TEM. Compared with previous reports of WSe2, the graphene-like WSe2 exhibits an excellent HER performance with a small Tafel slope of 78 mV dec(-1), a low onset potential of similar to 150 mV and a very long-term stability. The remarkable enhancement in catalytic performance of graphene-like WSe2 is attributed to its unique porous nanostructure with many exposed edge sites, which can provide abundant active reaction sites. The graphene-like WSe2 is a promising catalyst for high-performance hydrogen evolution. (C) 2016 Elsevier B.V. All rights reserved.
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