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이상영

Lee, Sang-Young
Energy Soft-Materials Lab.
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dc.citation.endPage A1008 -
dc.citation.number 8 -
dc.citation.startPage A1003 -
dc.citation.title JOURNAL OF THE ELECTROCHEMICAL SOCIETY -
dc.citation.volume 160 -
dc.contributor.author Kim, M.C. -
dc.contributor.author Kim, S.H. -
dc.contributor.author Aravindan, V. -
dc.contributor.author Kim, W.S. -
dc.contributor.author Lee, Sang-Young -
dc.contributor.author Leea, Y.S. -
dc.date.accessioned 2023-12-22T04:08:26Z -
dc.date.available 2023-12-22T04:08:26Z -
dc.date.created 2013-07-05 -
dc.date.issued 2013-04 -
dc.description.abstract In this study,we present the influence of polyimide (PI) coating concentration on the electrochemical properties of high voltage, spinel phase LiNi0.5Mn1.5O4 cathodes, particularly under elevated temperature conditions. First, the adipic acid-mediated sol-gel technique was employed to synthesize sub-micron sized LiNi0.5Mn1.5O4 particles, where Mn was in the 4± state. Thermal polymerization was used to produce the PI coating from polyamic acid. The presence of the PI layer was confirmed by transmission electron microscopy and Fourier-transform infrared analyzes. All test cells delivered good cycleability under ambient temperature conditions, irrespective of the PI coating concentration, with a prominent plateau at 4.7 V vs. Li, whereas all test cells experienced the poorest electrochemical behavior under elevated temperature conditions except 0.3 wt.% PI. The 0.3 wt.% PI coated LiNi0.5Mn1.5O4 phase delivered excellent cycleability with capacity retention of > 90% at 55°C. Poor compatibility and severe reactivity toward the electrolyte solution resulted in the poorest performance which was clearly evidenced by the scanning electron microscopy analysis and supported well by impedance studies after galvanostatic cycling. -
dc.identifier.bibliographicCitation JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.160, no.8, pp.A1003 - A1008 -
dc.identifier.doi 10.1149/2.013308jes -
dc.identifier.issn 0013-4651 -
dc.identifier.scopusid 2-s2.0-84877132864 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/2625 -
dc.identifier.url http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84877132864 -
dc.identifier.wosid 000324810000001 -
dc.language 영어 -
dc.publisher ELECTROCHEMICAL SOC INC -
dc.title Ultrathin polyimide coating for a spinel lini0.5mn1.5o4 cathode and its superior lithium storage properties under elevated temperature conditions -
dc.type Article -
dc.relation.journalWebOfScienceCategory Electrochemistry; Materials Science, Coatings & Films -
dc.relation.journalResearchArea Electrochemistry; Materials Science -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -

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