Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 258, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2019.117964
Keywords
Hydrogen evolution reaction; MoS2; Defect engineering; Coupling effect; Vacancy
Funding
- NSFC [21603208, 51802092]
- Shenzhen Science and Technology Project [JCYJ20170412105400428, JCYJ20180507182246321]
- Shenzhen Peacock Technological Innovation Project [KQJSCX20170727101208249]
- Fundamental Research Funds for the Central Universities
- Open Project Program of the State Key Laboratory of Silicon Materials, Zhejiang University
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Optimizing the activity of layered molybdenum disulfide (MoS2) toward hydrogen evolution reaction (HER) process is generally achieved by improving the electrical transport, intrinsic activity, and/or the number of active sites. However, simultaneously coupling these factors to achieve remarkable MoS2-based electrocatalysts has been seldom reported. Herein, we report a facile approach to the defect-rich one-dimensional MoS2 hierarchical architecture (1D-DRHA MoS2), which synergistically integrate the advantageous structural features of rich defects and one-dimensional hierarchal morphology. Toward HER process, the 1D-DRHA MoS2 electro-catalyst exhibited an overpotential of 119 mV at 10 mA cm(-2), a Tafel slope of 50.7 mV dec(-1), accompanied by an excellent stability. Notably, the activity is competitive to the state-of-the-art MoS2-based electrocatalysts for HER. The combination of experimental evidences and density functional theory calculations demonstrated the incorporation of rich defects and one-dimensional hierarchical structure improved electric conductivity, intrinsic activity, and active sites, which together accounted for the boosted HER performance.
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