期刊
SUSTAINABLE ENERGY & FUELS
卷 2, 期 1, 页码 96-102出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7se00376e
关键词
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资金
- NSF Division of Chemical, Bioengineering, Environmental, and Transport Systems [CBET: 1748363]
- ACS Petroleum Research Fund [ACSPRF: 57647-DNI10]
- NSF Division of Engineering Education Centers [REU Site: 1461031]
We report a simple ambient pressure annealing technique for the synthesis of ultrathin niobium disulfide (NbS2) nanoflakes. The structure, morphology and composition of the as-synthesized NbS2 flakes are well characterized using various microscopic and spectroscopic techniques. The synthesized two-dimensional layered NbS2 is in stoichiometric proportion, and has a single crystal 3R-NbS2 polymorph structure with semiconducting behavior and has abundant catalytic defect sites. In this paper, the hydrogen evolution reaction (HER) activity of the NbS2 nanoflakes/rGO composite having dense exposed basal planes with improved conductivity is explored, and it is found to be a good HER catalyst in terms of low onset potential, low Tafel slope and high exchange current density.
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