Vertical-crystalline Fe-doped beta-Ni oxyhydroxides for highly active and stable evolution reaction
DC Field | Value | Language |
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dc.contributor.author | Kim, Byeongyoon | - |
dc.contributor.author | Kabiraz, Mrinal Kanti | - |
dc.contributor.author | Lee, Jaewan | - |
dc.contributor.author | Choi, Changhyeok | - |
dc.contributor.author | Baik, Hionsuck | - |
dc.contributor.author | Jung, Yousung | - |
dc.contributor.author | Oh, Hyung-Suk | - |
dc.contributor.author | Choi, Sang-Il | - |
dc.contributor.author | Lee, Kwangyeol | - |
dc.date.accessioned | 2022-02-14T18:40:23Z | - |
dc.date.available | 2022-02-14T18:40:23Z | - |
dc.date.created | 2022-02-08 | - |
dc.date.issued | 2021-11-03 | - |
dc.identifier.issn | 2590-2393 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/135770 | - |
dc.description.abstract | The layered transition metal oxyhydroxides have received increasing interest owing to the efficient energy conversion performance and material stability during the oxygen evolution reaction (OER). In particular, Fe-doped NiOOH has shown record-high OER performance in alkaline media among various catalysts. Theoretically, undercoordinated facets including Ni4+, exposed at the edges of NiOOH, were predicted to perform highly active OER. Therefore, here we suggest a rational catalyst design, a vertical-crystalline beta-Fe/NiOOH layer built on faceted Fe/Ni nanocrystals, which exposes Ni4+ sites and could improve the OER performance dramatically. Electrochemical OER tests recorded the overpotential of 210 mV at a current density of 10 mA cm(-2) GEO and stable operation for 5 days. In situ/operando and density functional theory studies revealed that the Ni valence cycle between +2 and +4 assisted by Fe dopant is the key engine that greatly accelerates OER kinetics and that the vertical-crystalline beta-Fe/NiOOH layers on Ni octahedra are stable under harsh OER conditions. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER | - |
dc.subject | MEMBRANE WATER ELECTROLYSIS | - |
dc.subject | OXYGEN-EVOLUTION | - |
dc.subject | ELECTRONIC-STRUCTURE | - |
dc.subject | REACTION DYNAMICS | - |
dc.subject | REDOX STATES | - |
dc.subject | CATALYSTS | - |
dc.subject | ELECTROCATALYSTS | - |
dc.subject | OXIDE | - |
dc.subject | OXIDATION | - |
dc.subject | XANES | - |
dc.title | Vertical-crystalline Fe-doped beta-Ni oxyhydroxides for highly active and stable evolution reaction | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Kwangyeol | - |
dc.identifier.doi | 10.1016/j.matt.2021.09.003 | - |
dc.identifier.scopusid | 2-s2.0-85123000978 | - |
dc.identifier.wosid | 000717520800003 | - |
dc.identifier.bibliographicCitation | MATTER, v.4, no.11, pp.3585 - 3604 | - |
dc.relation.isPartOf | MATTER | - |
dc.citation.title | MATTER | - |
dc.citation.volume | 4 | - |
dc.citation.number | 11 | - |
dc.citation.startPage | 3585 | - |
dc.citation.endPage | 3604 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | CATALYSTS | - |
dc.subject.keywordPlus | ELECTROCATALYSTS | - |
dc.subject.keywordPlus | ELECTRONIC-STRUCTURE | - |
dc.subject.keywordPlus | MEMBRANE WATER ELECTROLYSIS | - |
dc.subject.keywordPlus | OXIDATION | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | OXYGEN-EVOLUTION | - |
dc.subject.keywordPlus | REACTION DYNAMICS | - |
dc.subject.keywordPlus | REDOX STATES | - |
dc.subject.keywordPlus | XANES | - |
dc.subject.keywordAuthor | AEMWE | - |
dc.subject.keywordAuthor | DFT study for Fe/NiOOH | - |
dc.subject.keywordAuthor | MAP4: Demonstrate | - |
dc.subject.keywordAuthor | active sites | - |
dc.subject.keywordAuthor | crystalline Fe/NiOOH | - |
dc.subject.keywordAuthor | electrocatalysis | - |
dc.subject.keywordAuthor | facet control | - |
dc.subject.keywordAuthor | heteroepitaxy | - |
dc.subject.keywordAuthor | in-situ/operando XAS | - |
dc.subject.keywordAuthor | oxygen evolution reaction | - |
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