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Cho, Jaephil
Nano Energy Storage Materials Lab (NESM)
Research Interests
  • Li-ion battery, metal-air battery, redox-flow battery, flexible battery .

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LiCoO2 cathode material that does not show a phase transition from hexagonal to monoclinic phase

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dc.contributor.author Cho, Jaephil ko
dc.contributor.author Kim, YJ ko
dc.contributor.author Park, B ko
dc.date.available 2014-07-01T04:37:30Z -
dc.date.created 2014-06-27 ko
dc.date.issued 2001-10 -
dc.identifier.citation JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.148, no.10, pp.A1110 - A1115 ko
dc.identifier.issn 0013-4651 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/5116 -
dc.identifier.uri http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0000652877 ko
dc.description.abstract Structural instability of LiCoO2 can be improved by sol-gel coating of Al2O3 and subsequent heat-treatments. While Al2O3 phase does not exist after heat-treatments. solid solution LiCo1-xAlxO2 that has discretely higher Al concentration was formed at the surface, up to similar to 500 Angstrom inside the particle. However, heat-treatment to 700 degreesC results in the presence of the solid solution beyond similar to 500 Angstrom. The different Al concentration at the surface significantly affects the structural stability of the materials during cycling, and those prepared at 400 degreesC do not show a phase transition from hexagonal to monoclinic phase, Disappearance of such a phase transition improves capacity retention of the cathode. Moreover, cathodes prepared at 400 and 500 degreesC show improved layered characteristics with cation order. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher ELECTROCHEMICAL SOC INC ko
dc.subject RECHARGEABLE LITHIUM BATTERIES ko
dc.subject R(3)OVER-BAR-M ko
dc.subject INTERCALATION ko
dc.subject DIFFRACTION ko
dc.subject OXIDE ko
dc.title LiCoO2 cathode material that does not show a phase transition from hexagonal to monoclinic phase ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-0000652877 ko
dc.identifier.wosid 000171501600009 ko
dc.type.rims ART ko
dc.description.wostc 91 *
dc.description.scopustc 132 *
dc.date.tcdate 2015-05-06 *
dc.date.scptcdate 2014-06-27 *
dc.identifier.doi 10.1149/1.1397772 ko
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