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dc.contributor.authorYu, Linping
dc.contributor.authorDang, Yanliu
dc.contributor.authorZeng, Julan
dc.contributor.authorHe, Junkai
dc.contributor.authorMurphy, Steven C
dc.contributor.authorKerns, Peter
dc.contributor.authorSuib, Steven L
dc.contributor.authorZhang, Jian
dc.contributor.authorDou, Yuhai
dc.date.accessioned2020-09-24T23:23:35Z
dc.date.available2020-09-24T23:23:35Z
dc.date.issued2020
dc.identifier.issn0169-4332en_US
dc.identifier.doi10.1016/j.apsusc.2020.146117en_US
dc.identifier.urihttp://hdl.handle.net/10072/397915
dc.description.abstractElectrocatalysts converted directly from the substrates hold the key to achieve high catalytic activity and durability due to their high bonding strength, intimate electronic contact, and tunable phase composition. Herein, an electrically conductive porous NiCuC substrate was adopted to develop a multi-porous NiCuOx/NiCuC hydrogen evolution reaction (HER) catalyst using a one-step oxidation method in this research. The NiCuOx hybrids were characterized as three typical layers: an outer layer with NiCuO2 solid solution phase, a partially oxidized intermediate layer, and an inner layer with limited stable oxygen content. The NiCuOx/NiCuC possesses abundant Ni(Ⅱ)-Cu(Ⅱ) sites to accelerate the Volmer step via the electrostatic effect with OH–, numerous metallic NiCu sites to facilitate the H adsorption, and highly accessible channels to promote the Heyrovsky step during HER catalysis. As a result, high electrocatalytic performance was obtained with an overpotential of 116 mV at a current density of 10 mA cm−2 in 1.0 M potassium hydroxide, and a stable catalytic performance during the HER process for more than 24 h.en_US
dc.description.peerreviewedYesen_US
dc.languageEnglishen_US
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom146117en_US
dc.relation.ispartofjournalApplied Surface Scienceen_US
dc.relation.ispartofvolume515en_US
dc.subject.fieldofresearchEnvironmental Sciencesen_US
dc.subject.fieldofresearchcode05en_US
dc.subject.keywordsScience & Technologyen_US
dc.subject.keywordsPhysical Sciencesen_US
dc.subject.keywordsChemistry, Physicalen_US
dc.subject.keywordsMaterials Science, Coatings & Filmsen_US
dc.titleSelf-grown NiCuOx hybrids on a porous NiCuC substrate as an HER cathode in alkaline solutionen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Articlesen_US
dcterms.bibliographicCitationYu, L; Dang, Y; Zeng, J; He, J; Murphy, SC; Kerns, P; Suib, SL; Zhang, J; Dou, Y, Self-grown NiCuOx hybrids on a porous NiCuC substrate as an HER cathode in alkaline solution, Applied Surface Science, 2020, 515, pp. 146117en_US
dc.date.updated2020-09-24T23:22:26Z
gro.hasfulltextNo Full Text
gro.griffith.authorDou, Yuhai


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