Please use this identifier to cite or link to this item: https://doi.org/10.1038/nmat3700
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dc.titleEnhanced catalytic activity in strained chemically exfoliated WS 2 nanosheets for hydrogen evolution
dc.contributor.authorVoiry, D.
dc.contributor.authorYamaguchi, H.
dc.contributor.authorLi, J.
dc.contributor.authorSilva, R.
dc.contributor.authorAlves, D.C.B.
dc.contributor.authorFujita, T.
dc.contributor.authorChen, M.
dc.contributor.authorAsefa, T.
dc.contributor.authorShenoy, V.B.
dc.contributor.authorEda, G.
dc.contributor.authorChhowalla, M.
dc.date.accessioned2014-10-16T09:23:42Z
dc.date.available2014-10-16T09:23:42Z
dc.date.issued2013-09
dc.identifier.citationVoiry, D., Yamaguchi, H., Li, J., Silva, R., Alves, D.C.B., Fujita, T., Chen, M., Asefa, T., Shenoy, V.B., Eda, G., Chhowalla, M. (2013-09). Enhanced catalytic activity in strained chemically exfoliated WS 2 nanosheets for hydrogen evolution. Nature Materials 12 (9) : 850-855. ScholarBank@NUS Repository. https://doi.org/10.1038/nmat3700
dc.identifier.issn14761122
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/96462
dc.description.abstractEfficient evolution of hydrogen through electrocatalysis at low overpotentials holds tremendous promise for clean energy. Hydrogen evolution can be easily achieved by electrolysis at large potentials that can be lowered with expensive platinum-based catalysts. Replacement of Pt with inexpensive, earth-abundant electrocatalysts would be significantly beneficial for clean and efficient hydrogen evolution. To this end, promising results have been reported using 2H (trigonal prismatic) XS 2 (where X=Mo or W) nanoparticles with a high concentration of metallic edges. The key challenges for XS 2 are increasing the number and catalytic activity of active sites. Here we report monolayered nanosheets of chemically exfoliated WS2 as efficient catalysts for hydrogen evolution with very low overpotentials. Analyses indicate that the enhanced electrocatalytic activity of WS2 is associated with the high concentration of the strained metallic 1T (octahedral) phase in the as-exfoliated nanosheets. Our results suggest that chemically exfoliated WS 2 nanosheets are interesting catalysts for hydrogen evolution. © 2013 Macmillan Publishers Limited. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1038/nmat3700
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.description.doi10.1038/nmat3700
dc.description.sourcetitleNature Materials
dc.description.volume12
dc.description.issue9
dc.description.page850-855
dc.description.codenNMAAC
dc.identifier.isiut000323417600023
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