Reinvestigation of the OP4-(Li/Na)CoO2- layered system and first evidence of the (Li/Na/NaCoO2 phase with OPP9 oxygen stacking
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | BERTHELOT, Romain | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | POLLET, Michaël | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CARLIER-LARREGARAY, Dany | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DELMAS, Claude | |
| dc.date.issued | 2011 | |
| dc.identifier.issn | 0020-1669 | |
| dc.description.abstractEn | The composition and synthesis conditions of the (Li/Na)CoO<sub>2</sub> phase with an ordered 1:1 Li/Na stacking alternating with CoO<sub>2</sub> slabs were determined from a careful study of the P2-Na<sub>0.7</sub>CoO<sub>2</sub>−O3-LiCoO<sub>2</sub> system. An in situ X-ray diffraction (XRD) thermal study emphasizes the metastable character of this phase that can be stabilized only by very fast quenching. Its composition, (Li<sub>0.42</sub>Na<sub>0.37</sub>)CoO<sub>2</sub>, is significantly different from the ideally expected one, (Li<sub>0.50</sub>Na<sub>0.35</sub>)CoO<sub>2</sub>, and its structure, confirmed by Rietveld refinement of the XRD pattern, presents an ideal alternate ordering of lithium, cobalt, and sodium layers within OP4-type oxygen packing. The presence of vacancies in both alkali-ion layers was confirmed by electrochemical intercalation of lithium and sodium. For the first time, a new type of layered oxide exhibiting OPP9-type oxygen packing was evidenced. Between the CoO<sub>2</sub> slabs, alkali ions are intercalated in the following order: Li<sub>octa</sub>−Na<sub>prism</sub>−Na<sub>prism</sub>. This material crystallizes in the <i>R</i><i>m</i> space group with <i>a</i><sub>hex</sub> = 2.828 Å and <i>c</i><sub>hex</sub> = 46.85 Å cell parameters. | |
| dc.language.iso | en | |
| dc.publisher | American Chemical Society | |
| dc.title.en | Reinvestigation of the OP4-(Li/Na)CoO2- layered system and first evidence of the (Li/Na/NaCoO2 phase with OPP9 oxygen stacking | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1021/ic102218w | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Inorganic Chemistry | |
| bordeaux.page | 2420-2430 | |
| bordeaux.volume | 50 | |
| bordeaux.issue | 6 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00577803 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00577803v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Inorganic%20Chemistry&rft.date=2011&rft.volume=50&rft.issue=6&rft.spage=2420-2430&rft.epage=2420-2430&rft.eissn=0020-1669&rft.issn=0020-1669&rft.au=BERTHELOT,%20Romain&POLLET,%20Micha%C3%ABl&CARLIER-LARREGARAY,%20Dany&DELMAS,%20Claude&rft.genre=article |
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