1. Composite electrocatalyst MoxW1-xS2 nanosheets on carbon fiber paper for highly efficient hydrogen evolution reaction.
- Author
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Yang, Qiangbin, He, Yi, Zou, Changjun, Wang, Jizhuang, Li, Hongjie, and Qing, Dayong
- Subjects
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MOLYBDENUM disulfide , *TUNGSTEN compounds , *CATALYSTS , *HYDROGEN evolution reactions , *ELECTROCATALYSTS , *CARBON fibers - 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. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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