Please use this identifier to cite or link to this item:
|Title:||Enhanced catalytic activity in strained chemically exfoliated WS 2 nanosheets for hydrogen evolution||Authors:||Voiry, D.
|Issue Date:||Sep-2013||Citation:||Voiry, 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||Abstract:||Efficient 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.||Source Title:||Nature Materials||URI:||http://scholarbank.nus.edu.sg/handle/10635/96462||ISSN:||14761122||DOI:||10.1038/nmat3700|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on May 20, 2020
WEB OF SCIENCETM
checked on May 13, 2020
checked on May 10, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.