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dc.contributor.authorGuo, X.
dc.contributor.authorJi, J.
dc.contributor.authorJiang, Q.
dc.contributor.authorZhang, L.
dc.contributor.authorAo, Z.
dc.contributor.authorFan, X.
dc.contributor.authorWang, Shaobin
dc.contributor.authorLi, Y.
dc.contributor.authorZhang, F.
dc.contributor.authorZhang, G.
dc.contributor.authorPeng, W.
dc.identifier.citationGuo, X. and Ji, J. and Jiang, Q. and Zhang, L. and Ao, Z. and Fan, X. and Wang, S. et al. 2017. Few-Layered Trigonal WS<inf>2</inf>Nanosheet-Coated Graphite Foam as an Efficient Free-Standing Electrode for a Hydrogen Evolution Reaction. ACS Applied Materials and Interfaces. 9 (36): pp. 30591-30598.

© 2017 American Chemical Society. Few-layered tungsten disulfide (WS 2 ) with a controlled-phase ratio (the highest trigonal-phase ratio being 67%) was exfoliated via lithium insertion. The exfoliated WS 2 nanosheets were then anchored onto three-dimensional (3D) graphite foam (GF) to fabricate free-standing binder-free electrodes. The 3D GF can increase the interfacial contact between the WS 2 nanosheets and the electrolyte and facilitate ion transfer. Without the nonconductive binder, an intimate contact between the WS 2 and GF interface can be created, leading to the improvement of electrical conductivity. In comparison to the pure WS 2 nanosheets, the overpotential for a hydrogen evolution reaction is significantly decreased from 350 mV to 190 mV at 10 mA/cm 2 , and no deactivation occurs after 1000 cycles. The density functional theory computations reveal that the efficient catalytic activity of the trigonal-phase WS 2 /GF electrode is attributed to the lower Gibbs free energy for H* adsorption and higher electrical conductivity.

dc.publisherAmerican Chemical Society
dc.titleFew-Layered Trigonal WS<inf>2</inf>Nanosheet-Coated Graphite Foam as an Efficient Free-Standing Electrode for a Hydrogen Evolution Reaction
dc.typeJournal Article
dcterms.source.titleACS Applied Materials and Interfaces
curtin.departmentDepartment of Chemical Engineering
curtin.accessStatusFulltext not available

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