Effects of iron substitution for nickel on electrochemical properties of LiNi0.8Co0.2O2 for lithium rechargeable batteries

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dc.contributor.authorPark, SCko
dc.contributor.authorHan, YSko
dc.contributor.authorLee, PSko
dc.contributor.authorAhn, Sko
dc.contributor.authorLee, HMko
dc.contributor.authorLee, Jai Youngko
dc.date.accessioned2013-03-03T16:22:41Z-
dc.date.available2013-03-03T16:22:41Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2001-12-
dc.identifier.citationJOURNAL OF POWER SOURCES, v.102, no.1-2, pp.130 - 134-
dc.identifier.issn0378-7753-
dc.identifier.urihttp://hdl.handle.net/10203/79443-
dc.description.abstractiron was substituted for Ni in LiNi0.8Co0.2 in order to enhance its electrochemical properties such as cycle life and rate capability. LiNi0.8-xFexCo0.2O2 (0 less than or equal to x less than or equal to 0.1) wag synthesized in flowing oxygen, for 12-48 h at 650-800 degreesC, and its structural and electrochemical properties were characterized with X-ray diffraction (XRD), cyclic voltammetry (CV) and charge-discharge tests. The XRD patterns of LiNi0.8-xFexCo0.2O2 showed that the alpha -NaFeO2 type layered structure was maintained up to x = 0.1. As Fe was substituted for Ni up to x = 0.05, the rate capability of LiNi0.8-xFexCo0.2O2 was improved. LiNi0.75Fe0.05Co0.2O2 showed better cycle stability than LiNi0.8Co0.2O2. XRD measurements indicated that the lattice Of LiNi0.75Fe0.05Co0.2O2 expanded less than that of LiNi0.8Co0.2O2 when the lithium was de-intercalated. CV curves of LiNi0.8-xFexCo0.2O2 showed current peaks, which are related to the phase transitions, diminished with Fe substitution during charging and discharging owing to the decrease of Ni3+. Consequently, the improved cycle stability of LiNi0.75Fe0.05Co0.2O2 May be attributed to the decrease of phase transition. (C) 2001 Elsevier Science B.V. All rights reserved.-
dc.languageEnglish-
dc.publisherELSEVIER SCIENCE SA-
dc.subjectM = CO-
dc.subjectION BATTERIES-
dc.subjectCATHODE-
dc.subjectLICOO2-
dc.subjectR(3)OVER-BAR-M-
dc.subjectPERFORMANCE-
dc.subjectCELLS-
dc.titleEffects of iron substitution for nickel on electrochemical properties of LiNi0.8Co0.2O2 for lithium rechargeable batteries-
dc.typeArticle-
dc.identifier.wosid000172597000018-
dc.type.rimsART-
dc.citation.volume102-
dc.citation.issue1-2-
dc.citation.beginningpage130-
dc.citation.endingpage134-
dc.citation.publicationnameJOURNAL OF POWER SOURCES-
dc.identifier.doi10.1016/S0378-7753(01)00780-7-
dc.contributor.nonIdAuthorPark, SC-
dc.contributor.nonIdAuthorHan, YS-
dc.contributor.nonIdAuthorLee, PS-
dc.contributor.nonIdAuthorAhn, S-
dc.contributor.nonIdAuthorLee, HM-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorlithium secondary battery-
dc.subject.keywordAuthorLiNi1-xCoxO2-
dc.subject.keywordAuthoriron substitution-
dc.subject.keywordAuthorrate capability-
dc.subject.keywordAuthorcycle life-
dc.subject.keywordPlusM = CO-
dc.subject.keywordPlusION BATTERIES-
dc.subject.keywordPlusCATHODE-
dc.subject.keywordPlusLICOO2-
dc.subject.keywordPlusR(3)OVER-BAR-M-
dc.subject.keywordPlusPERFORMANCE-
dc.subject.keywordPlusCELLS-
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