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Strong impact of the oxygen content in Na3V2(PO4)2F3-yOy (0< y < 0.5) on its structural and electrochemical properties

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
hal.structure.identifierLaboratoire réactivité et chimie des solides - UMR CNRS 7314 UPJV [LRCS]
dc.contributor.authorBROUX, Thibault
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
dc.contributor.authorBAMINE, Tahya
hal.structure.identifierEuropean Synchrotron Radiation Facility [ESRF]
dc.contributor.authorFAUTH, François
hal.structure.identifierEuropean Synchrotron Radiation Facility [ESRF]
dc.contributor.authorSIMONELLI, Laura
hal.structure.identifierEuropean Synchrotron Radiation Facility [ESRF]
hal.structure.identifierFaculty of Physics
dc.contributor.authorOLSZEWSKI, Wojciech
hal.structure.identifierEuropean Synchrotron Radiation Facility [ESRF]
dc.contributor.authorMARINI, Carlo
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.authorMÉNÉTRIER, Michel
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
dc.contributor.authorCARLIER, Dany
hal.structure.identifierLaboratoire réactivité et chimie des solides - UMR CNRS 7314 UPJV [LRCS]
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
hal.structure.identifierAdvanced Lithium Energy Storage Systems - ALISTORE-ERI [ALISTORE-ERI]
dc.contributor.authorMASQUELIER, Christian
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierAdvanced Lithium Energy Storage Systems - ALISTORE-ERI [ALISTORE-ERI]
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
dc.contributor.authorCROGUENNEC, Laurence
dc.date.issued2016
dc.identifier.issn0897-4756
dc.description.abstractEnPolyanionic materials such as Na3V2(PO4)2F3–yOy (0 ≤ y ≤ 2) are of high interest as positive electrode for Na-ion batteries since they offer competitive electrochemical performances compared to sodiated transition metal oxides. The composition Na3V2(PO4)2F3 (y = 0) has the highest theoretical energy density among the series, but surprisingly a lot of discrepancies are reported throughout the literature considering its structure and its electrochemical properties. We will show that most of the compounds reported as being Na3VIII2(PO4)2F3 are in fact slightly oxidized due to synthesis conditions resulting in a partial oxygen substitution for fluorine. To get an in-depth understanding of this system, a series of compositions Na3V2(PO4)2F3–yOy (0 ≤ y ≤ 0.5, i.e., near the fluorine-rich composition) was synthesized and characterized combining synchrotron X-ray diffraction, X-ray absorption spectroscopy, solid state nuclear magnetic resonance spectroscopy, and galvanostatic electrochemical tests. The structural features and electrochemical signatures of these oxidized compounds will be carefully compared to those recently obtained for Na3VIII2(PO4)2F3 by Bianchini et al.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/
dc.title.enStrong impact of the oxygen content in Na3V2(PO4)2F3-yOy (0< y < 0.5) on its structural and electrochemical properties
dc.typeArticle de revue
dc.identifier.doi10.1021/acs.chemmater.6b02659
dc.subject.halChimie/Matériaux
bordeaux.journalChemistry of Materials
bordeaux.page7683-7692
bordeaux.volume28
bordeaux.issue21
bordeaux.peerReviewedoui
hal.identifierhal-01415439
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01415439v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Chemistry%20of%20Materials&amp;rft.date=2016&amp;rft.volume=28&amp;rft.issue=21&amp;rft.spage=7683-7692&amp;rft.epage=7683-7692&amp;rft.eissn=0897-4756&amp;rft.issn=0897-4756&amp;rft.au=BROUX,%20Thibault&amp;BAMINE,%20Tahya&amp;FAUTH,%20Fran%C3%A7ois&amp;SIMONELLI,%20Laura&amp;OLSZEWSKI,%20Wojciech&amp;rft.genre=article


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