Lithium electrochemical deintercalation from O2-LiCoO2: structure and physical properties
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CARLIER-LARREGARAY, Dany | |
| hal.structure.identifier | Département de Chimie | |
| dc.contributor.author | SAADOUNE, Ismaël | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | MÉNÉTRIER, Michel | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DELMAS, Claude | |
| dc.date.issued | 2002 | |
| dc.identifier.issn | 0013-4651 | |
| dc.description.abstractEn | Electrochemical 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.iso | en | |
| dc.publisher | Electrochemical Society | |
| dc.subject.en | Transition metal Compounds | |
| dc.subject.en | Alkali metal Compounds | |
| dc.subject.en | Lithium | |
| dc.subject.en | X ray diffraction | |
| dc.subject.en | NMR spectrometry | |
| dc.subject.en | Specific capacity | |
| dc.subject.en | Discharge charge cycle | |
| dc.subject.en | Electrical characteristic | |
| dc.subject.en | Crystal morphology | |
| dc.subject.en | Electronic properties | |
| dc.subject.en | Lattice parameters | |
| dc.subject.en | Crystalline phase | |
| dc.subject.en | Lithium oxide | |
| dc.subject.en | Cobalt oxide | |
| dc.subject.en | Intercalation compound | |
| dc.subject.en | Ternary compound | |
| dc.subject.en | Electrode material | |
| dc.subject.en | Electric batteries | |
| dc.title.en | Lithium electrochemical deintercalation from O2-LiCoO2: structure and physical properties | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1149/1.1503075 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of The Electrochemical Society | |
| bordeaux.page | A1310-A1320 | |
| bordeaux.volume | 149 | |
| bordeaux.issue | 10 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00817889 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00817889v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20The%20Electrochemical%20Society&rft.date=2002&rft.volume=149&rft.issue=10&rft.spage=A1310-A1320&rft.epage=A1310-A1320&rft.eissn=0013-4651&rft.issn=0013-4651&rft.au=CARLIER-LARREGARAY,%20Dany&SAADOUNE,%20Isma%C3%ABl&M%C3%89N%C3%89TRIER,%20Michel&DELMAS,%20Claude&rft.genre=article |
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