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Cho, Jaephil
Nano Energy Storage Material Lab.
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DC Field Value Language
dc.citation.number 39 -
dc.citation.startPage 2003040 -
dc.citation.title ADVANCED MATERIALS -
dc.citation.volume 32 - Cha, Hyungyeon - Kim, Junhyeok - Lee, Hyomyung - Kim, Namhyung - Hwang, Jaeseong - Sung, Jaekyung - Yoon, Moonsu - Kim, Kyungho - Cho, Jaephil - 2023-12-21T17:06:22Z - 2023-12-21T17:06:22Z - 2020-09-03 - 2020-10 -
dc.description.abstract Conventional nickel-rich cathode materials suffer from reaction heterogeneity during electrochemical cycling particularly at high temperature, because of their polycrystalline properties and secondary particle morphology. Despite intensive research on the morphological evolution of polycrystalline nickel-rich materials, its practical investigation at the electrode and cell levels is still rarely discussed. Herein, an intrinsic limitation of polycrystalline nickel-rich cathode materials in high-energy full-cells is discovered under industrial electrode-fabrication conditions. Owing to their highly unstable chemo-mechanical properties, even after the first cycle, nickel-rich materials are degraded in the longitudinal direction of the high-energy electrode. This inhomogeneous degradation behavior of nickel-rich materials at the electrode level originates from the overutilization of active materials on the surface side, causing a severe non-uniform potential distribution during long-term cycling. In addition, this phenomenon continuously lowers the reversibility of lithium ions. Consequently, considering the degradation of polycrystalline nickel-rich materials, this study suggests the adoption of a robust single-crystalline LiNi(0.8)Co(0.1)Mn(0.1)O(2)as a feasible alternative, to effectively suppress the localized overutilization of active materials. Such an adoption can stabilize the electrochemical performance of high-energy lithium-ion cells, in which superior capacity retention above approximate to 80% after 1000 cycles at 45 degrees C is demonstrated. -
dc.identifier.bibliographicCitation ADVANCED MATERIALS, v.32, no.39, pp.2003040 -
dc.identifier.doi 10.1002/adma.202003040 -
dc.identifier.issn 0935-9648 -
dc.identifier.scopusid 2-s2.0-85089560200 -
dc.identifier.uri -
dc.identifier.url -
dc.identifier.wosid 000561041100001 -
dc.language 영어 -
dc.publisher WILEY-V C H VERLAG GMBH -
dc.title Boosting Reaction Homogeneity in High-Energy Lithium-Ion Battery Cathode Materials -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter -
dc.relation.journalResearchArea Chemistry; Science & Technology - Other Topics; Materials Science; Physics -
dc.type.docType Article; Early Access -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor electrode materials -
dc.subject.keywordAuthor lithium-ion batteries -
dc.subject.keywordAuthor nickel-rich cathodes -
dc.subject.keywordAuthor reaction heterogeneity -
dc.subject.keywordAuthor single crystals -
dc.subject.keywordPlus CAPACITY LOSS -
dc.subject.keywordPlus NI-RICH -
dc.subject.keywordPlus ELECTRODES -
dc.subject.keywordPlus IMPEDANCE -
dc.subject.keywordPlus BEHAVIOR -
dc.subject.keywordPlus DENSITY -


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