Thermal behavior of the layered oxide Li2/3Co2/3Mn1/3O2 obtained by ion exchange from the P2-type Na2/3Co2/3Mn1/3O2 phase
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | KOMABA, S. | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CROGUENNEC, Laurence | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | TOURNADRE, Frédéric | |
| hal.structure.identifier | Centre National d'Études Spatiales [Toulouse] [CNES] | |
| dc.contributor.author | WILLMANN, Patrick | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DELMAS, Claude | |
| dc.date.issued | 2013 | |
| dc.identifier.issn | 1932-7447 | |
| dc.description.abstractEn | Thermal evolution of the layered oxide Li2/3Co2/3Mn1/3O2, showing a T#2 stacking and prepared by a Na/Li ion exchange in P2-Na2/3Co2/3Mn1/3O2, was investigated by thermal analyses and X-ray diffraction. A thermal expansion of the T#2 orthorhombic unit cell is observed from 25 to 350 °C; from 350 °C the T#2 stacking is destabilized to the benefit of an O6-type stacking obtained from the former through slab gliding. The T#2 to O6 phase transformation is allowed to occur from a stacking with larger interlayer distances and the lithium ions in tetrahedral sites to a stacking with smaller interlayer distances and the lithium ions in octahedral sites. This phase transition from T#2 to O6 is reversible, even though its kinetic can be very slow: the thermal treatment of the T#2-type Li2/3Co2/3Mn1/3O2 phase at 450 °C with a quenching in air has shown to stabilize the O6HT-Li2/3Co2/3Mn1/3O2 phase. At temperatures higher than 450 °C, the layered oxide Li2/3Co2/3Mn1/3O2 is gradually decomposed into Li2MnO3 and Co3O4. First electrochemical tests performed in lithium batteries have revealed that O6HT-Li2/3Co2/3Mn1/3O2 delivers as positive electrode material a high reversible capacity of 230 mAh*g-1 over two voltage domains around 3 and 4 V vs Li+/Li. | |
| dc.language.iso | en | |
| dc.publisher | American Chemical Society | |
| dc.subject.en | Lamellar compounds | |
| dc.subject.en | Oxides | |
| dc.subject.en | Ion exchange | |
| dc.subject.en | Crystallography | |
| dc.subject.en | Thermal properties | |
| dc.title.en | Thermal behavior of the layered oxide Li2/3Co2/3Mn1/3O2 obtained by ion exchange from the P2-type Na2/3Co2/3Mn1/3O2 phase | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1021/jp310417q | |
| dc.subject.hal | Chimie/Matériaux | |
| dc.subject.hal | Chimie/Chimie inorganique | |
| bordeaux.journal | Journal of Physical Chemistry C | |
| bordeaux.page | 3264-3271 | |
| bordeaux.volume | 117 | |
| bordeaux.issue | 7 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00812477 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00812477v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Physical%20Chemistry%20C&rft.date=2013&rft.volume=117&rft.issue=7&rft.spage=3264-3271&rft.epage=3264-3271&rft.eissn=1932-7447&rft.issn=1932-7447&rft.au=KOMABA,%20S.&CROGUENNEC,%20Laurence&TOURNADRE,%20Fr%C3%A9d%C3%A9ric&WILLMANN,%20Patrick&DELMAS,%20Claude&rft.genre=article |
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