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dc.contributor.authorLiu, X
dc.contributor.authorNi, K
dc.contributor.authorWen, B
dc.contributor.authorNiu, C
dc.contributor.authorMeng, J
dc.contributor.authorGuo, R
dc.contributor.authorLi, Q
dc.contributor.authorLi, J
dc.contributor.authorZhu, Y
dc.contributor.authorWu, X
dc.contributor.authorZhao, D
dc.contributor.authorMai, L
dc.date.accessioned2019-10-23T01:23:17Z
dc.date.available2019-10-23T01:23:17Z
dc.date.issued2018
dc.identifier.issn2050-7488
dc.identifier.doi10.1039/c8ta07135g
dc.identifier.urihttp://hdl.handle.net/10072/388630
dc.description.abstractThe hydrogen adsorption strength and activity of each catalytic site greatly influence the hydrogen evolution reaction (HER) kinetics of electrocatalysts. It remains a challenge to effectively activate catalytic sites for interfacial carbon-catalyzed electrocatalysts. Here, we report a polyoxomolybdate-derived carbon-encapsulated multicomponent catalyst with nanowire structure. The activation of catalytic sites and enhancement of HER kinetics are achieved by incorporating tiny MoO 2 and Ni nanoparticles into a N-doped carbon layer (denoted as MoO 2 -Ni@NC). The MoO 2 -Ni@NC catalyst possesses a remarkable HER activity and is superior to most carbon-encapsulated electrocatalysts. In particular, it achieves a low overpotential of 58 mV at -10 mA cm -2 , and a high exchange current density of 0.375 mA cm -2 with good stability (up to 80000 s) in 0.5 M H 2 SO 4 . Theoretical analyses suggest that the N-doped carbon layer acts as an active adsorption site for hydrogen. The inner MoO 2 -Ni species behave as effective promoters to synergistically modulate the hydrogen adsorption strength on the interfacial carbon and enable the active sites to be more efficient. The synthesis strategy and the revealed catalytic mechanism can guide the rational design of high-efficiency carbon-encapsulated HER electrocatalysts.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherRoyal Society of Chemistry (RSC)
dc.relation.ispartofpagefrom17874
dc.relation.ispartofpageto17881
dc.relation.ispartofissue37
dc.relation.ispartofjournalJournal of Materials Chemistry A
dc.relation.ispartofvolume6
dc.subject.fieldofresearchMacromolecular and Materials Chemistry
dc.subject.fieldofresearchMaterials Engineering
dc.subject.fieldofresearchInterdisciplinary Engineering
dc.subject.fieldofresearchcode0303
dc.subject.fieldofresearchcode0912
dc.subject.fieldofresearchcode0915
dc.titlePolyoxomolybdate-derived carbon-encapsulated multicomponent electrocatalysts for synergistically boosting hydrogen evolution
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationLiu, X; Ni, K; Wen, B; Niu, C; Meng, J; Guo, R; Li, Q; Li, J; Zhu, Y; Wu, X; Zhao, D; Mai, L, Polyoxomolybdate-derived carbon-encapsulated multicomponent electrocatalysts for synergistically boosting hydrogen evolution, Journal of Materials Chemistry A, 2018, 6 (37), pp. 17874-17881
dc.date.updated2019-10-23T01:21:27Z
gro.hasfulltextNo Full Text
gro.griffith.authorZhao, Dongyuan


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