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dc.contributor.authorAdarakatti, Prashanth Shivappa
dc.contributor.authorMahanthappa, Mallappa
dc.contributor.authorHughes, Jack
dc.contributor.authorRowley-Neale, Samuel
dc.contributor.authorSmith, Graham
dc.contributor.authorS, Ashoka
dc.contributor.authorBanks, Craig
dc.date.accessioned2020-03-03T10:06:17Z
dc.date.available2020-03-03T10:06:17Z
dc.identifier.citationAdarakatti, P. S., Mahanthappa, M., Hughes, J. P., Rowley-Neale, S. J., Smith, G. C., Ashoka, S., & Banks, C. E. (2019). MoS2-graphene-CuNi2S4 nanocomposite an efficient electrocatalyst for the hydrogen evolution reaction. International Journal of Hydrogen Energy, 44(31), 16069-16078.en_US
dc.identifier.urihttp://hdl.handle.net/10034/623223
dc.description.abstractWe present a facile methodology for the synthesis of a novel 2D-MoS2, graphene and CuNi2S4 (MoS2-g-CuNi2S4) nanocomposite that displays highly efficient electrocatalytic activity towards the production of hydrogen. The intrinsic hydrogen evolution reaction (HER) activity of MoS2 nanosheets was significantly enhanced by increasing the affinity of the active edge sites towards Hþ adsorption using transition metal (Cu and Ni2) dopants, whilst also increasing the edge sites exposure by anchoring them to a graphene frame- work. Detailed XPS analysis reveals a higher percentage of surface exposed S at 17.04%, of which 48.83% is metal bonded S (sulfide). The resultant MoS2-g-CuNi2S4 nanocomposites are immobilized upon screen-printed electrodes (SPEs) and exhibit a HER onset potential and Tafel slope value of -0.05 V (vs. RHE) and 29.3 mV dec-1, respectively. These values are close to that of the polycrystalline Pt electrode (near zero potential (vs. RHE) and 21.0 mV dec-1, respectively) and enhanced over a bare/unmodified SPE (-0.43 V (vs. RHE) and 149.1 mV dec-1, respectively). Given the efficient, HER activity displayed by the novel MoS2-g-CuNi2S4/SPE electrochemical platform and the comparatively low associated cost of production for this nanocomposite, it has potential to be a cost-effective alternative to Pt within electrolyser technologies.en_US
dc.publisherElsevieren_US
dc.relation.urlhttps://www.sciencedirect.com/science/article/abs/pii/S0360319919318324en_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.subjectMolybdenum disulphideen_US
dc.subjectgrapheneen_US
dc.subjecthydrogen evolution reactionen_US
dc.subjectenergy storageen_US
dc.subjectXPSen_US
dc.titleMoS2-graphene-CuNi2S4 nanocomposite an efficient electrocatalyst for the hydrogen evolution reactionen_US
dc.typeArticleen_US
dc.contributor.departmentManchester Metropolitan University, University of Chester, Bengaluruen_US
dc.identifier.journalInternational Journal of Hydrogen Energyen_US
or.grant.openaccessYesen_US
rioxxterms.funderunfundeden_US
rioxxterms.identifier.projectunfundeden_US
rioxxterms.versionAMen_US
rioxxterms.versionofrecord10.1016/ijhydene.2019.05.004en_US
rioxxterms.licenseref.startdate2020-05-02
refterms.dateFCD2020-02-26T21:21:05Z
refterms.versionFCDAM
refterms.dateFOA2020-05-02T00:00:00Z
rioxxterms.publicationdate2019-05-02
dc.dateAccepted2019-04-19
dc.date.deposited2020-03-03en_US
dc.indentifier.issn0360-3199en_US


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Attribution-NonCommercial-NoDerivatives 4.0 International
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International