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dc.contributor.authorLiu, PF
dc.contributor.authorZhang, L
dc.contributor.authorZheng, LR
dc.contributor.authorYang, HG
dc.date.accessioned2019-09-25T03:27:37Z
dc.date.available2019-09-25T03:27:37Z
dc.date.issued2018
dc.identifier.issn2052-1537
dc.identifier.doi10.1039/c8qm00292d
dc.identifier.urihttp://hdl.handle.net/10072/387727
dc.description.abstractThe development of efficient catalytic electrodes towards the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) is at the heart of renewable-energy technologies. Despite the tremendous efforts towards engineering electrode schemes for increasing exposed surface areas and active sites, improving intrinsic catalytic activity still remains a great challenge. Here, we develop a surface-polyaniline (PANI) functionalized nickel selenide (NiSe-PANI) electrode with great performance enhancement for both the HER and OER. The decorated PANI layer subtly modulates the surface electronic structures of NiSe, with a surface-optimized selenium-enriched configuration for the HER and enhanced generation of NiIII/IV active species when oxidized for the OER. When used as a bifunctional electrocatalyst for overall water splitting, the NiSe-PANI electrode displays excellent performance, with a current density of ∼10 mA cm-2 at an applied voltage of 1.53 V during a long-term electrolysis test, and outperforms the Pt and IrO2 combination as the benchmark and most of the earth-abundant material-based bifunctional catalysts. Similar PANI-functionalization on other bifunctional nickel chalcogenide electrodes also exhibits obviously enhanced performance for overall water splitting, demonstrating the wider applicability of intrinsic activity enhancement via a surface electronic modulation strategy.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherRoyal Society of Chemistry (RSC)
dc.relation.ispartofpagefrom1725
dc.relation.ispartofpageto1731
dc.relation.ispartofissue9
dc.relation.ispartofjournalMaterials Chemistry Frontiers
dc.relation.ispartofvolume2
dc.titleSurface engineering of nickel selenide for an enhanced intrinsic overall water splitting ability
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationLiu, PF; Zhang, L; Zheng, LR; Yang, HG, Surface engineering of nickel selenide for an enhanced intrinsic overall water splitting ability, Materials Chemistry Frontiers, 2018, 2 (9), pp. 1725-1731
dc.date.updated2019-09-25T03:26:41Z
gro.hasfulltextNo Full Text
gro.griffith.authorYang, Huagui


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