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Ultra-high electrocatalytic activity of VS2 nanoflowers for efficient hydrogen evolution reaction
Yuanju Qu1,2; Mengmeng Shao1; Yangfan Shao1,3; Mingyang Yang1,4; Jincheng Xu1; Chi Tat Kwok1,2; Xingqiang Shi3; Zhouguang Lu4; Hui Pan1
2017-08-07
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Volume5Issue:29Pages:15080-15086
Abstract

It is a great challenge to explore cheap, abundant and eco-friendly electrocatalysts for hydrogen evolution reaction (HER). Here, we report the fabrication of VS2 nanoflowers with 1T phase by a simple hydrothermal method and their electrocatalytic performance in the HER. We find that the VS2 nanoflowers show comparable HER performance to Pt in acids, including an ultra-low onset potential of 32 mV, a Tafel slope of 34 mV dec(-1) which resembles that of Pt, and a small overpotential of 58 mV (54 mV for Pt) at a current density of 10 mA cm(-2). High stability and almost 100% faradaic efficiency indicate the practical application of VS2 nanoflowers in the HER. Our first-principles calculations reveal that the thermoneutral Gibbs free energy of hydrogen adsorption on both the basal and edge sites of the 1T-VS2 monolayer can be achieved under certain hydrogen coverage and the monolayer shows good conductivity, which contribute to the impressive catalytic performance of VS2 nanoflowers. We expect that the VS2 nanostructures may be applicable in electrocatalysis with high efficiency.

DOI10.1039/c7ta03172f
URLView the original
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000406187800016
PublisherROYAL SOC CHEMISTRY
The Source to ArticleWOS
Fulltext Access
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Cited Times [WOS]:45   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Institute of Applied Physics and Materials Engineering
Corresponding AuthorHui Pan
Affiliation1.Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, P. R. China
2.Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Macao SAR, P. R. China
3.Department of Physics, Southern University of Science and Technology, Shenzhen, China
4.Shenzhen Key Laboratory of Hydrogen Energy, Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, P. R. China
First Author AffilicationInstitute of Applied Physics and Materials Engineering;  Faculty of Science and Technology
Corresponding Author AffilicationInstitute of Applied Physics and Materials Engineering
Recommended Citation
GB/T 7714
Yuanju Qu,Mengmeng Shao,Yangfan Shao,et al. Ultra-high electrocatalytic activity of VS2 nanoflowers for efficient hydrogen evolution reaction[J]. JOURNAL OF MATERIALS CHEMISTRY A,2017,5(29):15080-15086.
APA Yuanju Qu.,Mengmeng Shao.,Yangfan Shao.,Mingyang Yang.,Jincheng Xu.,...&Hui Pan.(2017).Ultra-high electrocatalytic activity of VS2 nanoflowers for efficient hydrogen evolution reaction.JOURNAL OF MATERIALS CHEMISTRY A,5(29),15080-15086.
MLA Yuanju Qu,et al."Ultra-high electrocatalytic activity of VS2 nanoflowers for efficient hydrogen evolution reaction".JOURNAL OF MATERIALS CHEMISTRY A 5.29(2017):15080-15086.
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