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On the LixCo1-yMgyO2 system upon deintercalation: electrochemical, electronic properties and 7Li MAS NMR studies
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | LEVASSEUR, Stéphane | |
| 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 | 0378-7753 | |
| dc.description.abstractEn | A detailed characterization of the structural modifications and redox processes occurring upon lithium deintercalation from the Lix0Co1−yMgyO2 materials (x0=1.0 and 1.10; y=0.0, 0.03, 0.05 and 0.06) was performed in order to determine the effect of Mg doping on the cycling properties. Using electrochemical tests, X-ray diffraction (XRD), 7Li MAS NMR and electrical properties measurements, we show that the LixCo1−yMgyO2 system exhibits a solid solution existing in the whole deintercalation range studied (0.30≤×≤1.0). These phases exhibit reversible capacities equivalent to that of LiCoO2 upon cycling with a good structural stability. Moreover, the 7Li MAS NMR study shows that the structural defects (O vacancies and intermediate spin Co3+ ions) which are present in the starting Mg-doped phases govern the electronic properties upon lithium deintercalation. Indeed, regardless of the presence of Mg ions in the structure, a behavior similar to that of the LixCoO2 (1 | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | LiCoO2 | |
| dc.subject.en | Layered oxide | |
| dc.subject.en | NMR | |
| dc.subject.en | Lithium battery | |
| dc.subject.en | Electrical properties | |
| dc.subject.en | Magnesium substitution | |
| dc.title.en | On the LixCo1-yMgyO2 system upon deintercalation: electrochemical, electronic properties and 7Li MAS NMR studies | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/S0378-7753(02)00456-1 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Power Sources | |
| bordeaux.page | 419-427 | |
| bordeaux.volume | 112 | |
| bordeaux.issue | 2 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00817513 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00817513v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Power%20Sources&rft.date=2002&rft.volume=112&rft.issue=2&rft.spage=419-427&rft.epage=419-427&rft.eissn=0378-7753&rft.issn=0378-7753&rft.au=LEVASSEUR,%20St%C3%A9phane&M%C3%89N%C3%89TRIER,%20Michel&DELMAS,%20Claude&rft.genre=article |
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