dc.contributorUniversidade Federal de São Carlos (UFSCar)
dc.contributorUniversidade Estadual de Ponta Grossa (UEPG)
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-27T11:21:01Z
dc.date.accessioned2022-10-05T17:51:57Z
dc.date.available2014-05-27T11:21:01Z
dc.date.available2022-10-05T17:51:57Z
dc.date.created2014-05-27T11:21:01Z
dc.date.issued2004-01-02
dc.identifierJournal of Power Sources, v. 125, n. 1, p. 103-113, 2004.
dc.identifier0378-7753
dc.identifierhttp://hdl.handle.net/11449/67621
dc.identifier10.1016/j.jpowsour.2003.07.016
dc.identifier2-s2.0-0348157035
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3917251
dc.description.abstractA quantitative phase analysis was made of LixCoO2 powders obtained by two distinct chemical methodologies at different temperatures (from 400 to 700°C). A phase analysis was made using Rietveld refinements based on X-ray diffraction data, considering the Li xCoO2 powders as a multiphase system that simultaneously contained two main phases with distinct, layered and spinel-type structures. The results showed the coexistence of both structures in LixCoO 2 obtained at low temperature (400 and 500°C), although only the layered structure was detected at higher temperatures (600 and 700°C), regardless of the chemical powder process employed. The electrochemical performance, evaluated mainly by the cycling reversibility of Li xCoO2 in the form of cathode insertion electrodes, revealed that there is a close correlation between structural features and the electrochemical response, with one of the redox processes (3.3 v/3.9 v) associated only with the presence of the spinel-type structure. © 2003 Elsevier B.V. All rights reserved.
dc.languageeng
dc.relationJournal of Power Sources
dc.relation6.945
dc.relation2,202
dc.rightsAcesso restrito
dc.sourceScopus
dc.subjectInsertion electrodes
dc.subjectLixCoO2
dc.subjectLithium battery
dc.subjectRietveld method
dc.subjectX-ray structural refinement
dc.subjectElectrochemistry
dc.subjectHigh temperature effects
dc.subjectLithium batteries
dc.subjectLow temperature effects
dc.subjectNeutron diffraction
dc.subjectOxidation
dc.subjectPhase transitions
dc.subjectRedox reactions
dc.subjectStructure (composition)
dc.subjectX ray diffraction analysis
dc.subjectRietveld refinements (RR)
dc.subjectStructural stability
dc.subjectLithium compounds
dc.titleQuantitative structural analysis of the transition from LT-Li xCoO2 to HT-LixCoO2 using the rietveld method: Correlation between structure and electrochemical performance
dc.typeArtigo


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