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Multiple phases in the e-VPO4O-LiVPO4O-Li2VPO4O system : a combined solid state electrochemistry and diffraction structural study

hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
hal.structure.identifierLaboratoire réactivité et chimie des solides - UMR CNRS 7314 [LRCS]
hal.structure.identifierInstitut Laue-Langevin [ILL]
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBIANCHINI, Mateos
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorATEBA MBA, Jean-Marcel
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDAGAULT, Philippe
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBOGDAN, Elena
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCARLIER, Dany
hal.structure.identifierInstitut Laue-Langevin [ILL]
dc.contributor.authorSUARD, Emmanuelle
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
hal.structure.identifierLaboratoire réactivité et chimie des solides - UMR CNRS 7314 [LRCS]
dc.contributor.authorMASQUELIER, Christian
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCROGUENNEC, Laurence
dc.date.issued2014
dc.identifier.issn2050-7488
dc.description.abstractEnPolyanionic materials attract great interest in the field of Li-ion battery research thanks to the wide range of possible available compositions, resulting in a great amount of different properties. Tavorite type compositions offer a very rich crystal chemistry, among which LiVPO4F delivers the highest theoretical energy density. In this work we focus our interest on the homeotypic composition LiVPO4O. This oxy-phosphate shows the ability to exploit two redox couples, V5+/V4+ at 3.95 V vs. Li+/Li0 and V4+/V3+ at an average potential of 2.3 V vs. Li+/Li0 upon Li+ extraction and insertion, respectively. The two domains show marked differences both in the electrochemical signature and in the phase diagram. Here we address for the first time both topics with a combination of electrochemical techniques and ex situ/in situ X-ray and neutron diffraction and support of density functional theory (DFT) calculations, to get a deep understanding of the behavior of Li1±xVPO4O. In the low voltage region, in particular, the formation of intermediate phases and the crystal structure of the end member Li2VPO4O are reported for the first time.
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.title.enMultiple phases in the e-VPO4O-LiVPO4O-Li2VPO4O system : a combined solid state electrochemistry and diffraction structural study
dc.typeArticle de revue
dc.identifier.doi10.1039/C4TA01518E
dc.subject.halChimie/Matériaux
dc.subject.halChimie/Chimie inorganique
bordeaux.journalJournal of Materials Chemistry A
bordeaux.page10182-10192
bordeaux.volume2
bordeaux.issue26
bordeaux.peerReviewedoui
hal.identifierhal-01007499
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01007499v1
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