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DC Field | Value | Language |
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dc.citation.endPage | 8508 | - |
dc.citation.number | 26 | - |
dc.citation.startPage | 8499 | - |
dc.citation.title | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | - |
dc.citation.volume | 137 | - |
dc.contributor.author | Britto, Sylvia | - |
dc.contributor.author | Leskes, Michal | - |
dc.contributor.author | Hua, Xiao | - |
dc.contributor.author | Hebert, Claire-Alice | - |
dc.contributor.author | Shin, Hyeon Suk | - |
dc.contributor.author | Clarke, Simon | - |
dc.contributor.author | Borkiewicz, Olaf | - |
dc.contributor.author | Chapman, Karena W. | - |
dc.contributor.author | Seshadri, Ram | - |
dc.contributor.author | Cho, Jaephil | - |
dc.contributor.author | Grey, Clare P. | - |
dc.date.accessioned | 2023-12-22T01:07:45Z | - |
dc.date.available | 2023-12-22T01:07:45Z | - |
dc.date.created | 2015-08-31 | - |
dc.date.issued | 2015-07 | - |
dc.description.abstract | Vanadium sulfide VS4 in the patronite mineral structure is a linear chain compound comprising vanadium atoms coordinated by disulfide anions [S-2](2-). V-51 NMR shows that the material, despite having V formally in the d(1) configuration, is diamagnetic, suggesting potential dimerization through metal metal bonding associated with a Peierls distortion of the linear chains. This is supported by density functional calculations, and is also consistent with the observed alternation in V V distances of 2.8 and 3.2 angstrom along the chains. Partial lithiation results in reduction of the disulfide ions to sulfide S2-, via an internal redox process whereby an electron from V4+ is transferred to [S-2](2-) in oxidation of V4+ to V5+ and reduction of the [S-2](2-) to S2- to form Li3VS4 containing tetrahedral [VS4](3-) anions. On further lithiation this is followed by reduction of the V5+ in Li3VS4 to form Li3+xVS4 (x = 0.5-1), a mixed valent V4+/V5+ compound. Eventually reduction to Li2S plus elemental V occurs. Despite the complex redox processes involving both the cation and the anion occurring in this material, the system is found to be partially reversible between 0 and 3 V. The unusual redox processes in this system are elucidated using a suite of short-range characterization tools including V-51 nuclear magnetic resonance spectroscopy (NMR), S K-edge X-ray absorption near edge spectroscopy (XANES), and pair distribution function (PDF) analysis of X-ray data | - |
dc.identifier.bibliographicCitation | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.137, no.26, pp.8499 - 8508 | - |
dc.identifier.doi | 10.1021/jacs.5b03395 | - |
dc.identifier.issn | 0002-7863 | - |
dc.identifier.scopusid | 2-s2.0-84936818348 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/16408 | - |
dc.identifier.url | http://pubs.acs.org/doi/abs/10.1021/jacs.5b03395 | - |
dc.identifier.wosid | 000357964400035 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Multiple Redox Modes in the Reversible Lithiation of High-Capacity, Peierls-Distorted Vanadium Sulfide | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | SOLID-STATE NMR | - |
dc.subject.keywordPlus | KRISTALLSTRUKTUR DES PATRONITS | - |
dc.subject.keywordPlus | RECHARGEABLE BATTERIES | - |
dc.subject.keywordPlus | CONVERSION REACTION | - |
dc.subject.keywordPlus | REACTION-MECHANISM | - |
dc.subject.keywordPlus | LITHIUM BATTERIES | - |
dc.subject.keywordPlus | CATHODE MATERIALS | - |
dc.subject.keywordPlus | ION BATTERY | - |
dc.subject.keywordPlus | V-51 | - |
dc.subject.keywordPlus | SPECTROSCOPY | - |
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