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hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCARLIER-LARREGARAY, Dany
hal.structure.identifierDépartement de Chimie
dc.contributor.authorSAADOUNE, Ismaël
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMÉNÉTRIER, Michel
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDELMAS, Claude
dc.date.issued2002
dc.identifier.issn0013-4651
dc.description.abstractEnElectrochemical deintercalation of Li from the metastable O2-LiCoO2 phase has been investigated up to the composition Li0.15CoO2. The single-phase domains that separate the voltage plateaus observed have been characterized by X-ray diffraction. The succession of phases observed upon deintercalation results from reversible sheet gliding or lithium/vacancy ordering, leading to the sequence 02, T#2, T#2', 06, 02, 02. In particular, the T#2 stacking, similar to the T2 phase reported by Dahn and co-workers for the Li2/3Ni1/3Mn2/3O2 phases, corresponds to oxygen ions not sitting on the three positions of a triangular lattice, hence the # character is used. It exhibits very distorted tetrahedral sites for Li. The 06 stacking exhibits two kinds of CoO6 octahedra, which might allow Co3+/Co4+ ordering in alternate sheets. The most deintercalated O2-Li0.15CoO2 phase has never been reported before. Electronic properties and 7Li magic-angle spinning nuclear magnetic resonance show a transition to a metallic state for x< 0.94 (appearance of the T#2 phase with x = 0.72). These stacking changes are proposed to result from the minimization of electrostatic repulsion, except for T#2' (x = 0.50), which is believed to result from a Li/vacancy ordering.
dc.language.isoen
dc.publisherElectrochemical Society
dc.subject.enTransition metal Compounds
dc.subject.enAlkali metal Compounds
dc.subject.enLithium
dc.subject.enX ray diffraction
dc.subject.enNMR spectrometry
dc.subject.enSpecific capacity
dc.subject.enDischarge charge cycle
dc.subject.enElectrical characteristic
dc.subject.enCrystal morphology
dc.subject.enElectronic properties
dc.subject.enLattice parameters
dc.subject.enCrystalline phase
dc.subject.enLithium oxide
dc.subject.enCobalt oxide
dc.subject.enIntercalation compound
dc.subject.enTernary compound
dc.subject.enElectrode material
dc.subject.enElectric batteries
dc.title.enLithium electrochemical deintercalation from O2-LiCoO2: structure and physical properties
dc.typeArticle de revue
dc.identifier.doi10.1149/1.1503075
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of The Electrochemical Society
bordeaux.pageA1310-A1320
bordeaux.volume149
bordeaux.issue10
bordeaux.peerReviewedoui
hal.identifierhal-00817889
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00817889v1
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