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Facile synthesis of electrocatalytically active NbS2 nanoflakes for enhanced hydrogen evolution reaction (HER)

Abstract

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 different microscopic and spectroscopic techniques. The synthesized two-dimensional layered NbS2 was in stoichiometric proportion, and has a single crystal 3R-NbS2 polymorph structure with semiconducting behavior and have abundant catalytic defective sites. In this paper, the hydrogen evolution reaction (HER) activity of NbS2 nanoflakes/ rGO composite having dense exposed basal planes with the improved conductivity is explored and found to be a good HER catalyst in terms of low onset potential, high exchange current density, and low Tafel slope.

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Publication details

The article was received on 04 Aug 2017, accepted on 04 Nov 2017 and first published on 06 Nov 2017


Article type: Communication
DOI: 10.1039/C7SE00376E
Citation: Sustainable Energy Fuels, 2017, Accepted Manuscript
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    Facile synthesis of electrocatalytically active NbS2 nanoflakes for enhanced hydrogen evolution reaction (HER)

    D. Gopalakrishnan, A. Lee, T. Nareshkumar and L. M. R. Arava, Sustainable Energy Fuels, 2017, Accepted Manuscript , DOI: 10.1039/C7SE00376E

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