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DC Field | Value | Language |
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dc.citation.endPage | 5757 | - |
dc.citation.number | 23 | - |
dc.citation.startPage | 5748 | - |
dc.citation.title | CHEMISTRY OF MATERIALS | - |
dc.citation.volume | 19 | - |
dc.contributor.author | Appapillai, Anjuli T. | - |
dc.contributor.author | Mansour, Azzam N. | - |
dc.contributor.author | Cho, Jaephil | - |
dc.contributor.author | Shao-Horn, Yang | - |
dc.date.accessioned | 2023-12-22T09:08:51Z | - |
dc.date.available | 2023-12-22T09:08:51Z | - |
dc.date.created | 2014-05-19 | - |
dc.date.issued | 2007-11 | - |
dc.description.abstract | "AlPO 4"-coated LiCoO 2 was shown to exhibit markedly improved capacity retention relative to bare LiCO 2 upon cycling to 4.7 V, Scanning and transmission electron microscopy imaging showed that the coating thickness of "AlPOV 4"-coated LiCoO 2 varied from ∼ 10 to ∼ 100 nm. Energy-dispersive X-ray mapping revealed that the coating was not single-phase "AlPO 4", rather consisting of P-rich thick regions (∼100 nm) and Al-rich thin regions (∼10 nm). Detailed X-ray photoelectron spectroscopy (XPS) studies of the "AlPO 4"-coated LiCoO 2 in comparison to bare LiCoO 2 and various reference compounds such as Li 2CO 3, Li 3PO 4, and AlPO4 indicate that (1) AlPO 4 is absent on the surface; (2) the surface consisted of Li 3PO 4 and heavily Al substituted LiAl yCo 1-yO 2, which may result from AlPO 4 nanoparticles reacting with bare LiCoO 2 during the coating heat treatment at 700°C; and (3) the amount of surface Li 2CO 3 is markedly reduced in the coated sample relative to the bare LiCoO 2. The existence of Li 3PO 4 in "AlPO 4"-coated LiCoO 2 was confirmed with X-ray powder diffraction. The coating microstructure of "AlPO 4"- coated LICoO 2 is proposed, and the mechanisms of enhancement in the cycling and thermal characteristics by particle surface microstructure are discussed in detail. | - |
dc.identifier.bibliographicCitation | CHEMISTRY OF MATERIALS, v.19, no.23, pp.5748 - 5757 | - |
dc.identifier.doi | 10.1021/cm0715390 | - |
dc.identifier.issn | 0897-4756 | - |
dc.identifier.scopusid | 2-s2.0-36349023258 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/4634 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=36349023258 | - |
dc.identifier.wosid | 000250803900039 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Microstructure of LiCoO2 with and without "AIPO(4)" nanoparticle coating: Combined STEM and XPS studies | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | VOLTAGE ELECTROCHEMICAL PERFORMANCES | - |
dc.subject.keywordPlus | RECHARGEABLE LITHIUM BATTERIES | - |
dc.subject.keywordPlus | CYCLE-LIFE PERFORMANCE | - |
dc.subject.keywordPlus | CATHODE MATERIALS | - |
dc.subject.keywordPlus | THIN-FILMS | - |
dc.subject.keywordPlus | PHOSPHORUS OXYNITRIDE | - |
dc.subject.keywordPlus | ELECTRONIC-PROPERTIES | - |
dc.subject.keywordPlus | CAPACITY RETENTION | - |
dc.subject.keywordPlus | COBALT DISSOLUTION | - |
dc.subject.keywordPlus | PHASE-TRANSITIONS | - |
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