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DC Field | Value | Language |
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dc.citation.endPage | 7032 | - |
dc.citation.number | 12 | - |
dc.citation.startPage | 7025 | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 7 | - |
dc.contributor.author | Kim, Jae-Kwang | - |
dc.contributor.author | Senthilkumar, B | - |
dc.contributor.author | Sahgong, Sun Hye | - |
dc.contributor.author | Kim, Jung-Hyun | - |
dc.contributor.author | Chi, Miaofang | - |
dc.contributor.author | Kim, Youngsik | - |
dc.date.accessioned | 2023-12-22T01:36:20Z | - |
dc.date.available | 2023-12-22T01:36:20Z | - |
dc.date.created | 2015-04-24 | - |
dc.date.issued | 2015-04 | - |
dc.description.abstract | To obtain good electrochemical performance and thermal stability of rechargeable batteries, various cathode materials have been explored including NaVS2, -Na0.33V2O5, and LixV2O5. In particular, LixV2O5 has attracted attention as a cathode material in Li-ion batteries owing to its large theoretical capacity, but its stable electrochemical cycling (i.e., reversibility) still remains as a challenge and strongly depends on its synthesis methods. In this study, we prepared the LixV2O5 from electrochemical ion exchange of -Na0.33V2O5, which is obtained by chemical conversion of NaVS2 in air at high temperatures. Crystal structure and particle morphology of -Na0.33V2O5 are characterized by using X-ray diffraction, scanning electron microscopy, and transmission electron microscopy techniques. Energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy, in combination with electrochemical data, suggest that Na ions are extracted from -Na0.33V2O5 without irreversible structural collapse and replaced with Li ions during the following intercalation (i.e., charging) process. The thus obtained LixV2O5 delivers a high discharge capacity of 295 mAh g-1, which corresponds to x = 2, with crystal structural stability in the voltage range of 1.5-4.0 V versus. Li, as evidenced by its good cycling performance and high Coulombic efficiency (under 0.1 mA cm-2) at room temperature. Furthermore, the ion-exchanged LixV2O5 from -Na0.33V2O5 shows stable electrochemical behavior without structural collapse, even at a case of deep discharge to 1.5 V versus Li. © 2015 American Chemical Society | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.7, no.12, pp.7025 - 7032 | - |
dc.identifier.doi | 10.1021/acsami.5b01260 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.scopusid | 2-s2.0-84926354341 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/11365 | - |
dc.identifier.url | http://pubs.acs.org/doi/abs/10.1021/acsami.5b01260 | - |
dc.identifier.wosid | 000352246700079 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | New chemical route for the synthesis of -Na0.33V2O5 and its fully reversible Li intercalation | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics; Materials Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | -Na0.33V2O5 | - |
dc.subject.keywordAuthor | chemical switch | - |
dc.subject.keywordAuthor | high capacity cathode | - |
dc.subject.keywordAuthor | structural collapse | - |
dc.subject.keywordAuthor | vanadium oxides | - |
dc.subject.keywordAuthor | vanadium sulfides | - |
dc.subject.keywordPlus | ELECTROCHEMICAL LITHIUM INTERCALATION | - |
dc.subject.keywordPlus | HIGH-PERFORMANCE CATHODE | - |
dc.subject.keywordPlus | VANADIUM-OXIDE NANOWIRES | - |
dc.subject.keywordPlus | STRUCTURAL MODIFICATIONS | - |
dc.subject.keywordPlus | BETA-LIXV2O5 | - |
dc.subject.keywordPlus | ELECTROLYTE | - |
dc.subject.keywordPlus | NANOTUBES | - |
dc.subject.keywordPlus | BEHAVIOR | - |
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