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Baek, Kangkyun
복잡계 자기조립 연구단
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Crystal Phase Transition Creates a Highly Active and Stable RuCX Nanosurface for Hydrogen Evolution Reaction in Alkaline Media

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dc.contributor.authorKim, Jeonghyeon-
dc.contributor.authorKim, Hee Jin-
dc.contributor.authorRuqia, Bibi-
dc.contributor.authorKim, Mi Ji-
dc.contributor.authorJang, Yeong-Ji-
dc.contributor.authorJo, Tae Hwan-
dc.contributor.authorBaik, Hionsuck-
dc.contributor.authorOh, Hyung-Suk-
dc.contributor.authorChung, Hee-Suk-
dc.contributor.authorKangkyun Baek-
dc.contributor.authorNoh, Siwoo-
dc.contributor.authorJung, Moonjung-
dc.contributor.authorKim, Ki-jeong-
dc.contributor.authorLim, Hyung-Kyu-
dc.contributor.authorYoun, Young-Sang-
dc.contributor.authorChoi, Sang-Il-
dc.date.accessioned2021-12-13T01:30:01Z-
dc.date.available2021-12-13T01:30:01Z-
dc.date.created2021-11-01-
dc.date.issued2021-12-
dc.identifier.issn0935-9648-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/10833-
dc.description.abstract© 2021 Wiley-VCH GmbHAlthough metastable crystal structures have received much attention owing to their utilization in various fields, their phase-transition to a thermodynamic structure has attracted comparably little interest. In the case of nanoscale crystals, such an exothermic phase-transition releases high energy within a confined surface area and reconstructs surface atomic arrangement in a short time. Thus, this high-energy nanosurface may create novel crystal structures when some elements are supplied. In this work, the creation of a ruthenium carbide (RuCX, X < 1) phase on the surface of the Ru nanocrystal is discovered during phase-transition from cubic-close-packed to hexagonal-close-packed structure. When the electrocatalytic hydrogen evolution reaction (HER) is tested in alkaline media, the RuCX exhibits a much lower overpotential and good stability relative to the counterpart Ru-based catalysts and the state-of-the-art Pt/C catalyst. Density functional theory calculations predict that the local heterogeneity of the outermost RuCX surface promotes the bifunctional HER mechanism by providing catalytic sites for both H adsorption and facile water dissociation.-
dc.language영어-
dc.publisherJohn Wiley and Sons Inc-
dc.titleCrystal Phase Transition Creates a Highly Active and Stable RuCX Nanosurface for Hydrogen Evolution Reaction in Alkaline Media-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000703764200001-
dc.identifier.scopusid2-s2.0-85116320387-
dc.identifier.rimsid76581-
dc.contributor.affiliatedAuthorKangkyun Baek-
dc.identifier.doi10.1002/adma.202105248-
dc.identifier.bibliographicCitationAdvanced Materials, v.33, no.48-
dc.relation.isPartOfAdvanced Materials-
dc.citation.titleAdvanced Materials-
dc.citation.volume33-
dc.citation.number48-
dc.type.docTypeArticle-
dc.description.journalClass1-
dc.description.journalClass1-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.relation.journalResearchAreaChemistry-
dc.relation.journalResearchAreaScience & Technology - Other Topics-
dc.relation.journalResearchAreaMaterials Science-
dc.relation.journalResearchAreaPhysics-
dc.relation.journalWebOfScienceCategoryChemistry, Multidisciplinary-
dc.relation.journalWebOfScienceCategoryChemistry, Physical-
dc.relation.journalWebOfScienceCategoryNanoscience & Nanotechnology-
dc.relation.journalWebOfScienceCategoryMaterials Science, Multidisciplinary-
dc.relation.journalWebOfScienceCategoryPhysics, Applied-
dc.relation.journalWebOfScienceCategoryPhysics, Condensed Matter-
dc.subject.keywordPlusRUTHENIUM NANOPARTICLES-
dc.subject.keywordPlusREDUCTION-
dc.subject.keywordPlusNANOSTRUCTURES-
dc.subject.keywordPlusCATALYST-
dc.subject.keywordPlusOXIDE-
dc.subject.keywordPlusPH-
dc.subject.keywordPlusOXOPHILICITY-
dc.subject.keywordPlusMETALS-
dc.subject.keywordPlusHEAT-
dc.subject.keywordPlusACID-
dc.subject.keywordAuthoralkaline media-
dc.subject.keywordAuthorhydrogen evolution reaction-
dc.subject.keywordAuthornanosurfaces-
dc.subject.keywordAuthorphase transitions-
dc.subject.keywordAuthorruthenium carbide-
Appears in Collections:
Center for Self-assembly and Complexity(복잡계 자기조립 연구단) > 1. Journal Papers (저널논문)
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