There are no files associated with this item.
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 672 | - |
dc.citation.startPage | 664 | - |
dc.citation.title | NATURE MATERIALS | - |
dc.citation.volume | 21 | - |
dc.contributor.author | Eum, Donggun | - |
dc.contributor.author | Kim, Byunghoon | - |
dc.contributor.author | Song, Jun-Hyuk | - |
dc.contributor.author | Park, Hyeokjun | - |
dc.contributor.author | Jang, Ho-Young | - |
dc.contributor.author | Kim, Sung Joo | - |
dc.contributor.author | Cho, Sung-Pyo | - |
dc.contributor.author | Lee, Myeong Hwan | - |
dc.contributor.author | Heo, Jae Hoon | - |
dc.contributor.author | Park, Jaehyun | - |
dc.contributor.author | Ko, Youngmin | - |
dc.contributor.author | Park, Sung Kwan | - |
dc.contributor.author | Kim, Jinsoo | - |
dc.contributor.author | Oh, Kyungbae | - |
dc.contributor.author | Kim, Do-Hoon | - |
dc.contributor.author | Kang, Seok Ju | - |
dc.contributor.author | Kang, Kisuk | - |
dc.date.accessioned | 2023-12-21T14:09:33Z | - |
dc.date.available | 2023-12-21T14:09:33Z | - |
dc.date.created | 2022-04-04 | - |
dc.date.issued | 2022-06 | - |
dc.description.abstract | Lattice oxygen redox offers an unexplored way to access superior electrochemical properties of transition metal oxides (TMOs) for rechargeable batteries. However, the reaction is often accompanied by unfavourable structural transformations and persistent electrochemical degradation, thereby precluding the practical application of this strategy. Here we explore the close interplay between the local structural change and oxygen electrochemistry during short- and long-term battery operation for layered TMOs. The substantially distinct evolution of the oxygen-redox activity and reversibility are demonstrated to stem from the different cation-migration mechanisms during the dynamic de/intercalation process. We show that the pi stabilization on the oxygen oxidation initially aids in the reversibility of the oxygen redox and is predominant in the absence of cation migrations; however, the pi-interacting oxygen is gradually replaced by sigma-interacting oxygen that triggers the formation of O-O dimers and structural destabilization as cycling progresses. More importantly, it is revealed that the distinct cation-migration paths available in the layered TMOs govern the conversion kinetics from pi to sigma interactions. These findings constitute a step forward in unravelling the correlation between the local structural evolution and the reversibility of oxygen electrochemistry and provide guidance for further development of oxygen-redox layered electrode materials. Transition metal oxide electrodes are promising for rechargeable batteries but are subject to suffer from structural transformations and electrochemical degradation. The evolution of oxygen-redox activity and reversibility in layered electrodes are shown to arise from cation-migration mechanisms during de/intercalation. | - |
dc.identifier.bibliographicCitation | NATURE MATERIALS, v.21, pp.664 - 672 | - |
dc.identifier.doi | 10.1038/s41563-022-01209-1 | - |
dc.identifier.issn | 1476-1122 | - |
dc.identifier.scopusid | 2-s2.0-85126482385 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/57744 | - |
dc.identifier.url | https://www.nature.com/articles/s41563-022-01209-1 | - |
dc.identifier.wosid | 000770195000002 | - |
dc.language | 영어 | - |
dc.publisher | NATURE PORTFOLIO | - |
dc.title | Coupling structural evolution and oxygen-redox electrochemistry in layered transition metal oxides | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter | - |
dc.relation.journalResearchArea | Chemistry; Materials Science; Physics | - |
dc.type.docType | Article; Early Access | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | ANIONIC REDOX | - |
dc.subject.keywordPlus | LI-ION | - |
dc.subject.keywordPlus | HIGH-CAPACITY | - |
dc.subject.keywordPlus | O-O | - |
dc.subject.keywordPlus | CATHODES | - |
dc.subject.keywordPlus | ORIGIN | - |
dc.subject.keywordPlus | PHASE | - |
dc.subject.keywordPlus | RAMAN | - |
dc.subject.keywordPlus | MN | - |
Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Tel : 052-217-1404 / Email : scholarworks@unist.ac.kr
Copyright (c) 2023 by UNIST LIBRARY. All rights reserved.
ScholarWorks@UNIST was established as an OAK Project for the National Library of Korea.