Synergistic Interlayer and Defect Engineering in VS2 Nanosheets toward Efficient Electrocatalytic Hydrogen Evolution Reaction

Handle URI:
http://hdl.handle.net/10754/626739
Title:
Synergistic Interlayer and Defect Engineering in VS2 Nanosheets toward Efficient Electrocatalytic Hydrogen Evolution Reaction
Authors:
Zhang, Junjun; Zhang, Chenhui ( 0000-0002-0124-6315 ) ; Wang, Zhenyu; Zhu, Jian ( 0000-0001-9829-4382 ) ; Wen, Zhiwei; Zhao, Xingzhong; Zhang, Xixiang ( 0000-0002-3478-6414 ) ; Xu, Jun; Lu, Zhouguang
Abstract:
A simple one-pot solvothermal method is reported to synthesize VS2 nanosheets featuring rich defects and an expanded (001) interlayer spacing as large as 1.00 nm, which is a ≈74% expansion as relative to that (0.575 nm) of the pristine counterpart. The interlayer-expanded VS2 nanosheets show extraordinary kinetic metrics for electrocatalytic hydrogen evolution reaction (HER), exhibiting a low overpotential of 43 mV at a geometric current density of 10 mA cm-2 , a small Tafel slope of 36 mV dec-1 , and long-term stability of 60 h without any current fading. The performance is much better than that of the pristine VS2 with a normal interlayer spacing, and even comparable to that of the commercial Pt/C electrocatalyst. The outstanding electrocatalytic activity is attributed to the expanded interlayer distance and the generated rich defects. Increased numbers of exposed active sites and modified electronic structures are achieved, resulting in an optimal free energy of hydrogen adsorption (∆GH ) from density functional theory calculations. This work opens up a new door for developing transition-metal dichalcogenide nanosheets as high active HER electrocatalysts by interlayer and defect engineering.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program
Citation:
Zhang J, Zhang C, Wang Z, Zhu J, Wen Z, et al. (2017) Synergistic Interlayer and Defect Engineering in VS2 Nanosheets toward Efficient Electrocatalytic Hydrogen Evolution Reaction. Small: 1703098. Available: http://dx.doi.org/10.1002/smll.201703098.
Publisher:
Wiley-Blackwell
Journal:
Small
Issue Date:
27-Dec-2017
DOI:
10.1002/smll.201703098
Type:
Article
ISSN:
1613-6810
Sponsors:
This work was financially supported by the National Natural Science Foundation of China (No. 21671096), the Shenzhen Key Laboratory Project (No. ZDSYS201603311013489), the Natural Science Foundation of Shenzhen (Nos. JCYJ20170412153139454, JCYJ20150630145302231, JCYJ20150331101823677), and the Fundamental Research Funds for the Central Universities (No. JZ2016HGTB0725).
Additional Links:
http://onlinelibrary.wiley.com/doi/10.1002/smll.201703098/full
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorZhang, Junjunen
dc.contributor.authorZhang, Chenhuien
dc.contributor.authorWang, Zhenyuen
dc.contributor.authorZhu, Jianen
dc.contributor.authorWen, Zhiweien
dc.contributor.authorZhao, Xingzhongen
dc.contributor.authorZhang, Xixiangen
dc.contributor.authorXu, Junen
dc.contributor.authorLu, Zhouguangen
dc.date.accessioned2018-01-11T08:52:14Z-
dc.date.available2018-01-11T08:52:14Z-
dc.date.issued2017-12-27en
dc.identifier.citationZhang J, Zhang C, Wang Z, Zhu J, Wen Z, et al. (2017) Synergistic Interlayer and Defect Engineering in VS2 Nanosheets toward Efficient Electrocatalytic Hydrogen Evolution Reaction. Small: 1703098. Available: http://dx.doi.org/10.1002/smll.201703098.en
dc.identifier.issn1613-6810en
dc.identifier.doi10.1002/smll.201703098en
dc.identifier.urihttp://hdl.handle.net/10754/626739-
dc.description.abstractA simple one-pot solvothermal method is reported to synthesize VS2 nanosheets featuring rich defects and an expanded (001) interlayer spacing as large as 1.00 nm, which is a ≈74% expansion as relative to that (0.575 nm) of the pristine counterpart. The interlayer-expanded VS2 nanosheets show extraordinary kinetic metrics for electrocatalytic hydrogen evolution reaction (HER), exhibiting a low overpotential of 43 mV at a geometric current density of 10 mA cm-2 , a small Tafel slope of 36 mV dec-1 , and long-term stability of 60 h without any current fading. The performance is much better than that of the pristine VS2 with a normal interlayer spacing, and even comparable to that of the commercial Pt/C electrocatalyst. The outstanding electrocatalytic activity is attributed to the expanded interlayer distance and the generated rich defects. Increased numbers of exposed active sites and modified electronic structures are achieved, resulting in an optimal free energy of hydrogen adsorption (∆GH ) from density functional theory calculations. This work opens up a new door for developing transition-metal dichalcogenide nanosheets as high active HER electrocatalysts by interlayer and defect engineering.en
dc.description.sponsorshipThis work was financially supported by the National Natural Science Foundation of China (No. 21671096), the Shenzhen Key Laboratory Project (No. ZDSYS201603311013489), the Natural Science Foundation of Shenzhen (Nos. JCYJ20170412153139454, JCYJ20150630145302231, JCYJ20150331101823677), and the Fundamental Research Funds for the Central Universities (No. JZ2016HGTB0725).en
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1002/smll.201703098/fullen
dc.rightsThis is the peer reviewed version of the following article: Synergistic Interlayer and Defect Engineering in VS2 Nanosheets toward Efficient Electrocatalytic Hydrogen Evolution Reaction, which has been published in final form at http://doi.org/10.1002/smll.201703098. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.en
dc.subjectHydrogen Evolution Reactionen
dc.subjectNanosheetsen
dc.subjectTransition-metal Dichalcogenidesen
dc.subjectInterlayer Expansionen
dc.subjectVs2en
dc.titleSynergistic Interlayer and Defect Engineering in VS2 Nanosheets toward Efficient Electrocatalytic Hydrogen Evolution Reactionen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.identifier.journalSmallen
dc.eprint.versionPost-printen
dc.contributor.institutionSchool of Physics and Technology; Wuhan University; Wuhan 430072 P. R. Chinaen
dc.contributor.institutionShenzhen Key Laboratory of Hydrogen Energy and Department of Materials Science and Engineering; Southern University of Science and Technology; Shenzhen 518055 P. R. Chinaen
dc.contributor.institutionSchool of Electronic Science and Applied Physics; Hefei University of Technology; Hefei 230009 P. R. Chinaen
kaust.authorZhang, Chenhuien
kaust.authorZhang, Xixiangen
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