DC Field | Value | Language |
---|---|---|
dc.contributor.author | Son, JT | ko |
dc.contributor.author | Kim, Ho Gi | ko |
dc.date.accessioned | 2013-03-06T07:25:25Z | - |
dc.date.available | 2013-03-06T07:25:25Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2005-09 | - |
dc.identifier.citation | JOURNAL OF POWER SOURCES, v.147, no.1-2, pp.220 - 226 | - |
dc.identifier.issn | 0378-7753 | - |
dc.identifier.uri | http://hdl.handle.net/10203/86272 | - |
dc.description.abstract | To investigate the electrochemical properties of LiMn2O4-xFx (0 < x < 1) as a cathode material for 4-V class lithium secondary batteries, spinel phases synthesized at 800 degrees C are examined. Although the initial discharge capacity of LiMn2O4 is improved by substitution of F- for O-2(-) in the single-phase region, the cycle performance is reduced considerably compared with that of parent LiMn2O4. X-ray diffraction (XRD) data show that the single-phase region of x in LiMn2O4-xFx is 0 < x < 0.2. A secondary phase (Mn2O3) is observed in the region 0.4 < x < 1.0. Voltammetric peaks between 3 and 4.5 V region and XRD data suggest that the oxidation state of Mn in the parent LiMn2O4 increases at the expense of creating second phase (Mn2O3). These results also imply that a second phase spinel can improve the cycling performance of LiMn2O4 by suppressing the Jahn-Teller instability. The oxidation state of Mn in the single-phase spinel and the second-phase coexisting spinel is compared by means of XPS measurements. The electronic conductivity and activation energy of LiMn2O4 is also discussed. (c) 2005 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.publisher | Elsevier Science Bv | - |
dc.subject | ELECTROCHEMICAL PROPERTIES | - |
dc.subject | INTERCALATION CATHODES | - |
dc.subject | ION BATTERIES | - |
dc.subject | LITHIUM | - |
dc.subject | TEMPERATURE | - |
dc.subject | ELECTRODE | - |
dc.subject | PHASE | - |
dc.subject | CELLS | - |
dc.title | New investigation of fluorine-substituted spinel LiMn2O4-xFx by using sol-gel process | - |
dc.type | Article | - |
dc.identifier.wosid | 000232241400021 | - |
dc.identifier.scopusid | 2-s2.0-23944516886 | - |
dc.type.rims | ART | - |
dc.citation.volume | 147 | - |
dc.citation.issue | 1-2 | - |
dc.citation.beginningpage | 220 | - |
dc.citation.endingpage | 226 | - |
dc.citation.publicationname | JOURNAL OF POWER SOURCES | - |
dc.identifier.doi | 10.1016/j.jpowsour.2004.12.006 | - |
dc.contributor.localauthor | Kim, Ho Gi | - |
dc.contributor.nonIdAuthor | Son, JT | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | LiMn2O4 | - |
dc.subject.keywordAuthor | fluorine | - |
dc.subject.keywordAuthor | electronic conductivity | - |
dc.subject.keywordAuthor | cycleabilty | - |
dc.subject.keywordAuthor | lithium secondary battery | - |
dc.subject.keywordAuthor | electrochemical properties | - |
dc.subject.keywordPlus | ELECTROCHEMICAL PROPERTIES | - |
dc.subject.keywordPlus | INTERCALATION CATHODES | - |
dc.subject.keywordPlus | ION BATTERIES | - |
dc.subject.keywordPlus | LITHIUM | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | ELECTRODE | - |
dc.subject.keywordPlus | PHASE | - |
dc.subject.keywordPlus | CELLS | - |
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