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Entropymetry for non-destructive structural analysis of LiCoO2 cathodes
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Hye Jin | - |
dc.contributor.author | Park, Youngkyu | - |
dc.contributor.author | Kwon, Yoonjin | - |
dc.contributor.author | Shin, Jaeho | - |
dc.contributor.author | Kim, Young-Han | - |
dc.contributor.author | Ahn, Hyun-Seok | - |
dc.contributor.author | Yazami, Rachid | - |
dc.contributor.author | Choi, Jang Wook | - |
dc.date.accessioned | 2021-01-31T03:35:50Z | - |
dc.date.available | 2021-01-31T03:35:50Z | - |
dc.date.created | 2020-05-14 | - |
dc.date.issued | 2020-01 | - |
dc.identifier.citation | Energy and Environmental Sciences, Vol.13 No.1, pp.286-296 | - |
dc.identifier.issn | 1754-5692 | - |
dc.identifier.other | 99729 | - |
dc.identifier.uri | https://hdl.handle.net/10371/171749 | - |
dc.description.abstract | Upon the emergence of electric vehicles, accurate and non-destructive monitoring of battery electrode materials during operation is highly desirable. Structural degradation of widely adopted intercalation-based materials constitutes the origin of their capacity fading and safety deterioration. Here, we introduce entropymetry to monitor the structural changes of LiCoO2 (LCO) and its nickel (Ni)-doped derivatives at different states of charge (SOC). While simple lithium (Li) extraction on charging gives a monotonic decline of entropy change (Delta S) based on progressive vacancy occupation over Li sites, the presence of a monoclinic intermediate phase inverses the slope of the Delta S profile to reflect its limited atomic configurations with high ordering. Furthermore, Ni-doping lessens the ordering of the monoclinic phase, decreasing the height amplitude of Delta S profile in the monoclinic regime. The increased disorder by Ni-doping enhances the stability of the lattice framework, extending the cycle life with high voltage cut-off (4.6 V vs. Li/Li+). The present study highlights entropymetry as a unique, non-destructive tool in monitoring the structural ordering and relevant degradation of electrode materials in lithium-ion batteries. | - |
dc.language | 영어 | - |
dc.publisher | Royal Society of Chemistry | - |
dc.title | Entropymetry for non-destructive structural analysis of LiCoO2 cathodes | - |
dc.type | Article | - |
dc.contributor.AlternativeAuthor | 최장욱 | - |
dc.identifier.doi | 10.1039/c9ee02964h | - |
dc.citation.journaltitle | Energy and Environmental Sciences | - |
dc.identifier.wosid | 000508857600021 | - |
dc.identifier.scopusid | 2-s2.0-85078541555 | - |
dc.citation.endpage | 296 | - |
dc.citation.number | 1 | - |
dc.citation.startpage | 286 | - |
dc.citation.volume | 13 | - |
dc.identifier.sci | 000508857600021 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Choi, Jang Wook | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | X-RAY-DIFFRACTION | - |
dc.subject.keywordPlus | ELECTROCHEMICAL PROPERTIES | - |
dc.subject.keywordPlus | LITHIUM INTERCALATION | - |
dc.subject.keywordPlus | THERMAL-BEHAVIOR | - |
dc.subject.keywordPlus | DOPED LICOO2 | - |
dc.subject.keywordPlus | ION | - |
dc.subject.keywordPlus | TRANSITION | - |
dc.subject.keywordPlus | CHALLENGES | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | ANODES | - |
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