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DC Field | Value | Language |
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dc.citation.endPage | 13460 | - |
dc.citation.number | 25 | - |
dc.citation.startPage | 13453 | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 3 | - |
dc.contributor.author | Lee, Min-Joon | - |
dc.contributor.author | Noh, Mijung | - |
dc.contributor.author | Park, Mi-Hee | - |
dc.contributor.author | Jo, Minki | - |
dc.contributor.author | Kim, Hyejung | - |
dc.contributor.author | Nam, Haisol | - |
dc.contributor.author | Cho, Jaephil | - |
dc.date.accessioned | 2023-12-22T01:07:24Z | - |
dc.date.available | 2023-12-22T01:07:24Z | - |
dc.date.created | 2015-09-22 | - |
dc.date.issued | 2015-07 | - |
dc.description.abstract | In order to overcome the inherent structural instability of bare LixNi0.8Co0.15Al0.05O2 (BNCA) containing large amounts of LiOH and Li2CO3 impurities at 60 and >200 degrees C, an effective nanoscale layer was generated by coating BNCA with an ammonium vanadate precursor, followed by annealing at 400 degrees C. This process forms a 17 nm thick surface layer containing V4+ ions in the transition metal 3b sites, thereby decreasing the thickness of the cation-mixing layer, which is the main factor responsible for destabilizing the surface structure. Such a coating also helps in substantially reducing the amount of surface impurities of LiOH, Li2CO3, and H2O by forming LiVO2, LiV2O5, VO2, and V2O5. Consequently, at 60 degrees C, vanadium-treated LiNi0.8Co0.15Al0.05O2 (VNCA) demonstrated excellent cyclability with a discharge capacity of 179 mA h g(-1) after 200 cycles (after 17 days) between 3 and 4.3 V, corresponding to 90% capacity retention, which is 18% higher than the capacity retention measured for BNCA. More importantly, VNCA exhibits a significantly reduced heat generation and a higher onset temperature for exothermic reactions | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.3, no.25, pp.13453 - 13460 | - |
dc.identifier.doi | 10.1039/c5ta01571e | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.scopusid | 2-s2.0-84934935689 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/17060 | - |
dc.identifier.url | http://pubs.rsc.org/en/Content/ArticleLanding/2015/TA/C5TA01571E#!divAbstract | - |
dc.identifier.wosid | 000356455200035 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRYROYAL SOC CHEMISTRY | - |
dc.title | The role of nanoscale-range vanadium treatment in LiNi0.8Co0.15Al0.05O2 cathode materials for Li-ion batteries at elevated temperatures | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Materials Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | ELECTROCHEMICAL PERFORMANCE | - |
dc.subject.keywordPlus | LITHIUM BATTERIES | - |
dc.subject.keywordPlus | DEGREES-C | - |
dc.subject.keywordPlus | SURFACE | - |
dc.subject.keywordPlus | BEHAVIOR | - |
dc.subject.keywordPlus | SPINEL | - |
dc.subject.keywordPlus | LI(NI0.8CO0.15AL0.05)O-2 | - |
dc.subject.keywordPlus | INSTABILITY | - |
dc.subject.keywordPlus | IMPROVEMENT | - |
dc.subject.keywordPlus | TRANSITION | - |
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