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Structure and reversible lithium intercalation in a new P′3-phase: Na2/3Mn1−yFeyO2 (y = 0, 1/3, 2/3)

hal.structure.identifierInstitute of General and Inorganic Chemistry
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorYONCHEVA, Meglena
hal.structure.identifierInstitute of General and Inorganic Chemistry
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorSTOYANOVA, Radostina
hal.structure.identifierInstitute of General and Inorganic Chemistry
dc.contributor.authorZHECHEVA, Ekaterina
hal.structure.identifierInstitute of General and Inorganic Chemistry
dc.contributor.authorKUZMANOVA, Elitza
hal.structure.identifierCentral Laboratory of Solar Energy and New Energy Sources [CL SENES]
dc.contributor.authorSENDOVA-VASSILEVA, Marushka
hal.structure.identifierInstitute of General and Inorganic Chemistry
hal.structure.identifierInstitute of Mineralogy and Crystallography
dc.contributor.authorNIHTIANOVA, Diana
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCARLIER-LARREGARAY, Dany
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGUIGNARD, Marie
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDELMAS, Claude
dc.date.issued2012
dc.identifier.issn0959-9428
dc.description.abstractEnIn this contribution, new data on the reversible Li+ intercalation in iron substituted sodium manganates are provided. Novel Na2/3Mn1−yFeyO2 (y = 0, 1/3 and 2/3) compounds with a P′3-type structure are prepared from freeze-dried citrate precursors at 500 °C. A new structural element is the development of three-layer oxygen stacking contrary to the well-known P2-type Na2/3MnO2 with a two-layer sequence. The effect of Fe additives on the structure of Na2/3MnO2 was examined by XRD powder diffraction and TEM analysis. The oxidation state and the distribution of transition metal ions in Na2/3Mn1−yFeyO2 were analysed using electron paramagnetic resonance spectroscopy. The lithium intercalation in Na2/3Mn1−yFeyO2 was investigated in two-electrode lithium cells of the type Li|LiPF6 (EC:DMC)|Na2/3Mn1−yFeyO2. The stability of the layered phases during lithium intercalation was studied by ex situ Raman spectroscopy. It was found that the intermediate Na2/3Mn2/3Fe1/3O2 composition is able to intercalate Li+ reversibly in high amounts. Details of the structure and its stability during the Li+ intercalation are discussed.
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.title.enStructure and reversible lithium intercalation in a new P′3-phase: Na2/3Mn1−yFeyO2 (y = 0, 1/3, 2/3)
dc.typeArticle de revue
dc.identifier.doi10.1039/C2JM35203F
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Materials Chemistry
bordeaux.page23418-23427
bordeaux.volume22
bordeaux.issue44
bordeaux.peerReviewedoui
hal.identifierhal-00772975
hal.version1
hal.popularnon
hal.audienceInternationale
dc.subject.itReversible Li+ intercalation
dc.subject.itIron
dc.subject.itSubstitution
dc.subject.itSodium manganates
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00772975v1
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