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The P2-Na(2/3)Co(2/3)Mn(1/3)O(2) phase: structure, physical properties and electrochemical behavior as positive electrode in sodium battery.

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCARLIER-LARREGARAY, Dany
hal.structure.identifierDepartment of chemical engineering and Technology
dc.contributor.authorCHENG, J. H.
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierLaboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN]
dc.contributor.authorBERTHELOT, Romain
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGUIGNARD, Marie
hal.structure.identifierInstitute of General and Inorganic Chemistry
dc.contributor.authorYONCHEVA, M.
hal.structure.identifierInstitute of General and Inorganic Chemistry
dc.contributor.authorSTOYANOVA, R.
hal.structure.identifierDepartment of chemical engineering and Technology
dc.contributor.authorHWANG, B. J.
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDELMAS, Claude
dc.date.issued2011
dc.identifier.issn1477-9226
dc.description.abstractEnManganese substituted sodium cobaltate, Na(2/3)Co(2/3)Mn(1/3)O(2), with a layered hexagonal structure (P2-type) was obtained by a co-precipitation method followed by a heat treatment at 950 °C. Powder X-ray diffraction analysis revealed that the phase is pure in the absence of long-range ordering of Co and Mn ions in the slab or Na(+) and vacancy in the interslab space. The oxidation states of the transition metal ions were studied by magnetic susceptibility measurements, electron paramagnetic resonance (ESR) and (23)Na magic angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy. The charge compensation is achieved by the stabilization of low-spin Co(3+) and Mn(4+) ions. The capability of Na(2/3)Co(2/3)Mn(1/3)O(2) to intercalate and deintercalate Na(+) reversibly was tested in electrochemical sodium cells. It appears that the P2 structure is maintained during cycling, the cell parameter evolution versus the sodium amount is given. From the features of the cycling curve the formation of an ordered phase for the Na(0.5)Co(2/3)Mn(1/3)O(2) composition is expected.
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.title.enThe P2-Na(2/3)Co(2/3)Mn(1/3)O(2) phase: structure, physical properties and electrochemical behavior as positive electrode in sodium battery.
dc.typeArticle de revue
dc.identifier.doi10.1039/c1dt10798d
dc.subject.halChimie/Matériaux
bordeaux.journalDalton Transactions
bordeaux.page9306-9312
bordeaux.volume40
bordeaux.issue36
bordeaux.peerReviewedoui
hal.identifierhal-00619812
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00619812v1
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