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홍성유

Hong, Sung You
Synthetic Organic Chemistry Lab.
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dc.citation.endPage 287 -
dc.citation.startPage 276 -
dc.citation.title JOURNAL OF POWER SOURCES -
dc.citation.volume 396 -
dc.contributor.author Kim, Koeun -
dc.contributor.author Kim, Yeonkyoung -
dc.contributor.author Park, Sewon -
dc.contributor.author Yang, Hyun Ji -
dc.contributor.author Park, Sung Ji -
dc.contributor.author Shin, Kyomin -
dc.contributor.author Woo, Jung-Je -
dc.contributor.author Kim, Saheum -
dc.contributor.author Hong, Sung You -
dc.contributor.author Choi, Nam-Soon -
dc.date.accessioned 2023-12-21T20:21:26Z -
dc.date.available 2023-12-21T20:21:26Z -
dc.date.created 2018-07-17 -
dc.date.issued 2018-08 -
dc.description.abstract An ethyl 4,4,4-trifluorobutyrate (ETFB) additive, with ester and partially fluorinated alkyl moieties, is employed to stabilize the interface structure of Ni-rich layered LiNi0.7Co0.15Mn0.15O2 (NCM) cathodes and graphite anodes. The analysis of the surface chemistry of the electrodes shows that ETFB serves as a Afunctional additive for constructing protective layers on both electrodes in a full cell. Cycling tests reveal that the addition of 1% ETFB leads to excellent capacity retention (84.8%) for the NCM/graphite full cell, which also delivers a superior discharge capacity of 167 mAh g(-1) and a high Coulombic efficiency of over 99.8% after 300 cycles at 45 degrees C. The ETFB-derived protective layer effectively reduces intergranular cracking in secondary NCM cathode particles upon repeated charge-discharge cycling and limits the dissolution of transition metal ions from the cathode at high temperatures. In addition, after ETFB reduction, the graphite anode develops a thermally stable interface structure, which suppresses the self-discharge of graphite coupled with the NCM cathode at 60 degrees C. -
dc.identifier.bibliographicCitation JOURNAL OF POWER SOURCES, v.396, pp.276 - 287 -
dc.identifier.doi 10.1016/j.jpowsour.2018.06.046 -
dc.identifier.issn 0378-7753 -
dc.identifier.scopusid 2-s2.0-85048390487 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/24418 -
dc.identifier.url https://www.sciencedirect.com/science/article/pii/S0378775318306426 -
dc.identifier.wosid 000440876700032 -
dc.language 영어 -
dc.publisher ELSEVIER SCIENCE BV -
dc.title Dual-function ethyl 4,4,4-trifluorobutyrate additive for high-performance Ni-rich cathodes and stable graphite anodes -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary -
dc.relation.journalResearchArea Chemistry; Electrochemistry; Energy & Fuels; Materials Science -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor Lithium-ion batteries -
dc.subject.keywordAuthor Ni-rich layered cathodes -
dc.subject.keywordAuthor Graphite anodes -
dc.subject.keywordAuthor Ethyl 4,4,4-trifluorobutyrate -
dc.subject.keywordAuthor Solid electrolyte interphase -
dc.subject.keywordPlus LITHIUM-ION BATTERIES -
dc.subject.keywordPlus ELECTROCHEMICAL PROPERTIES -
dc.subject.keywordPlus POLYMER ELECTROLYTES -
dc.subject.keywordPlus CYCLE LIFE -
dc.subject.keywordPlus CHALLENGES -
dc.subject.keywordPlus MECHANISM -
dc.subject.keywordPlus OXIDE -
dc.subject.keywordPlus LINI0.8CO0.1MN0.1O2 -
dc.subject.keywordPlus CARBONATE) -
dc.subject.keywordPlus GENERATION -

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