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김영식

Kim, Youngsik
YK Research
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dc.citation.endPage 999 -
dc.citation.number 2 -
dc.citation.startPage 993 -
dc.citation.title NANO LETTERS -
dc.citation.volume 14 -
dc.contributor.author Lee, Min-Joon -
dc.contributor.author Lee, Sanghan -
dc.contributor.author Oh, Pilgun -
dc.contributor.author Kim, Youngsik -
dc.contributor.author Cho, Jaephil -
dc.date.accessioned 2023-12-22T03:07:03Z -
dc.date.available 2023-12-22T03:07:03Z -
dc.date.created 2014-03-03 -
dc.date.issued 2014-02 -
dc.description.abstract Tremendous research works have been done to develop better cathode materials for a large scale battery to be used for electric vehicles (EVs). Spinel LiMn2O4 has been considered as the most promising cathode among the many candidates due to its advantages of high thermal stability, low cost, abundance, and environmental affinity. However, it still suffers from the surface dissolution of manganese in the electrolyte at elevated temperature, especially above 60 C, which leads to a severe capacity fading. To overcome this barrier, we here report an imaginative material design; a novel heterostructure LiMn2O4 with epitaxially grown layered (R3Ì...m) surface phase. No defect was observed at the interface between the host spinel and layered surface phase, which provides an efficient path for the ionic and electronic mobility. In addition, the layered surface phase protects the host spinel from being directly exposed to the highly active electrolyte at 60 C. The unique characteristics of the heterostructure LiMn 2O4 phase exhibited a discharge capacity of 123 mAh g -1 and retained 85% of its initial capacity at the elevated temperature (60 C) after 100 cycles. -
dc.identifier.bibliographicCitation NANO LETTERS, v.14, no.2, pp.993 - 999 -
dc.identifier.doi 10.1021/nl404430e -
dc.identifier.issn 1530-6984 -
dc.identifier.scopusid 2-s2.0-84894205409 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/4076 -
dc.identifier.url http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84894205409 -
dc.identifier.wosid 000331343900091 -
dc.language 영어 -
dc.publisher AMER CHEMICAL SOC -
dc.title High performance LiMn2O4 cathode materials grown with epitaxial layered nanostructure for Li-Ion batteries -
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.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -

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