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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 365 | - |
dc.citation.number | 8 | - |
dc.citation.startPage | 362 | - |
dc.citation.title | ELECTROCHEMICAL AND SOLID STATE LETTERS | - |
dc.citation.volume | 3 | - |
dc.contributor.author | Cho, Jaephil | - |
dc.contributor.author | Kim, CS | - |
dc.contributor.author | Yoo, SI | - |
dc.date.accessioned | 2023-12-22T12:07:12Z | - |
dc.date.available | 2023-12-22T12:07:12Z | - |
dc.date.created | 2014-07-21 | - |
dc.date.issued | 2000-08 | - |
dc.description.abstract | We report that sol-gel coating of SnO2 and subsequent heat-treatment at relatively low temperature greatly improve the structural stability of LiCoO2 cathodes. Coated LiCoO2 materials heat-treated at 400 and 500 degrees C exhibit excellent structural stability, retaining 86 and 84%, respectively, of their initial capacities after 47 cycles between 4.4 and 2.75 V at the 0.5 C rate. This is attributed to the disappearance of the transition to a hexagonal phase from a monoclinic phase at 4.15-4.2 V during cycling, a result of the formation of nonuniform Sn distribution throughout the particle, i.e., higher Sn concentration near the particle surface. In contrast, coated LiCoO2 heat-treated at 600 degrees C that shows uniform Sn distribution throughout the particles exhibits this phase transition during cycling, as does uncoated LiCoO2, leading to 51% capacity loss after 47 cycles. This phase transition also increases cation disorder upon cycling. | - |
dc.identifier.bibliographicCitation | ELECTROCHEMICAL AND SOLID STATE LETTERS, v.3, no.8, pp.362 - 365 | - |
dc.identifier.doi | 10.1149/1.1391149 | - |
dc.identifier.issn | 1099-0062 | - |
dc.identifier.scopusid | 2-s2.0-0342918692 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/5226 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0342918692 | - |
dc.identifier.wosid | 000087748000003 | - |
dc.language | 영어 | - |
dc.publisher | ELECTROCHEMICAL SOC INC | - |
dc.title | Improvement of structural stability of LiCoO2 cathode during electrochemical cycling by sol-gel coating of SnO2 | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
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