Exfoliated MoS₂ with porous graphene nanosheets for enhanced electrochemical hydrogen evolution

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dc.contributor.authorLiu, Y.
dc.contributor.authorLiu, J.
dc.contributor.authorLi, Z.
dc.contributor.authorFan, X.
dc.contributor.authorLi, Y.
dc.contributor.authorZhang, F.
dc.contributor.authorZhang, G.
dc.contributor.authorPeng, W.
dc.contributor.authorWang, S.
dc.date.issued2018
dc.descriptionAvailable online 2 March 2018
dc.description.abstractPorous graphene (P-rGO) was synthesized from graphene oxide (GO) via a one-pot calcination method with CO<inf>2</inf> as an activation agent at 800 °C. Due to the special porous structure, the surface area of P-rGO can be increased to ∼759 m<sup>2</sup>/g. The P-rGO was then used as a support to incorporate with chemical exfoliated molybdenum disulfide (MoS<inf>2</inf>) for the fabrication of MoS<inf>2</inf>/P-rGO composite. Compared to bulk MoS<inf>2</inf>, the exfoliated MoS<inf>2</inf> is in the 1T phase with a metallic property and smaller charge transfer resistance, thus has a better activity in electrochemical hydrogen evolution reaction (HER). The HER activity of 1T MoS<inf>2</inf> could be further increased after the combination with P-rGO. The overpotential of 1T MoS<inf>2</inf>/P-rGO was only ∼130 mV vs. RHE, and the corresponding Tafel slope was ∼75 mV Dec<sup>−1</sup>. The special porous structure and good electric conductivity of P-rGO decrease the charge transfer resistance of the composite without sheltering too many active sites of MoS<inf>2</inf>, thus leading to the enhanced HER activity. As an efficient noble metal free HER catalyst, the 1T MoS<inf>2</inf>/P-rGO has great potential for large-scale hydrogen production.
dc.description.statementofresponsibilityYizhe Liu, Jiapeng Liu, Zhen Li, Xiaobin Fan, Yang Li, Fengbao Zhang, Guoliang Zhang, Wenchao Peng, Shaobin Wang
dc.identifier.citationInternational Journal of Hydrogen Energy, 2018; 43(30):13946-13952
dc.identifier.doi10.1016/j.ijhydene.2018.02.039
dc.identifier.issn0360-3199
dc.identifier.issn1879-3487
dc.identifier.orcidWang, S. [0000-0002-1751-9162]
dc.identifier.urihttp://hdl.handle.net/2440/114514
dc.language.isoen
dc.publisherElsevier
dc.relation.granthttp://purl.org/au-research/grants/arc/DP150103026
dc.rights© 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
dc.source.urihttps://doi.org/10.1016/j.ijhydene.2018.02.039
dc.subjectPorous graphene; MoS₂ nanosheets; hydrogen evolution reaction; electrocatalysis
dc.titleExfoliated MoS₂ with porous graphene nanosheets for enhanced electrochemical hydrogen evolution
dc.title.alternativeExfoliated MoS(2) with porous graphene nanosheets for enhanced electrochemical hydrogen evolution
dc.typeJournal article
pubs.publication-statusPublished

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