Composite electrocatalyst MoxW1-xS2 nanosheets on carbon fiber paper for highly efficient hydrogen evolution reaction |
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| Authors: | Qiangbin Yang Yi He Changjun Zou Jizhuang Wang Hongjie Li Dayong Qing |
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| Affiliation: | 1.State Key Lab of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu,China;2.Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province,Southwest Petroleum University,Chengdu,China;3.School of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu,China |
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| Abstract: | Molybdenum disulfide (MoS2) or tungsten disulfide (WS2), as a promising catalyst, is widely investigated for hydrogen evolution reaction (HER). In this work, a composite electrocatalysts MoxW1-xS2 is successfully decorated on carbon fiber paper (CFP) through a facile hydrothermal method. The three-dimensional porous CFP can enable the diffusion and penetration of electrolyte. Comparing with MoS2 and WS2 catalyst, the composite electrocatalyst MoxW1-xS2 nanosheets can expose the large number of electrochemically active sites. Hence, the as-prepared MoxW1-xS2/CFP (3:1) exhibit the outstanding HER catalytic activity with the small Tafel slope of 68 mV dec?1 and the low overpotential of ??178.4?±?0.5 mV at a current density of 10 mA cm?2. Chronoamperometric current test for 18 h confirm the long-term stability of the composite electrocatalyst. |
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