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Monitoring the crystal structure and the electrochemical properties of Na3(VO)2(PO4)2F through Fe3+ substitution

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierLaboratoire réactivité et chimie des solides - UMR CNRS 7314 UPJV [LRCS]
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
dc.contributor.authorNGUYEN, Long H. B.
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.identifierAdvanced Lithium Energy Storage Systems - ALISTORE-ERI [ALISTORE-ERI]
dc.contributor.authorOLCHOWKA, Jacob
hal.structure.identifierSynchrotron SOLEIL [SSOLEIL]
dc.contributor.authorBELIN, Stéphanie
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorSANZ CAMACHO, Paula
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDUTTINE, Mathieu
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
dc.contributor.authorIADECOLA, Antonella
hal.structure.identifierALBA Synchrotron light source [Barcelone]
dc.contributor.authorFAUTH, François
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.identifierAdvanced Lithium Energy Storage Systems - ALISTORE-ERI [ALISTORE-ERI]
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.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
hal.structure.identifierAdvanced Lithium Energy Storage Systems - ALISTORE-ERI [ALISTORE-ERI]
dc.contributor.authorCROGUENNEC, Laurence
dc.date.issued2019-10-11
dc.identifier.issn1944-8244
dc.description.abstractEnWe here present the synthesis of a new material, Na3(VO)Fe(PO4)2F2, by the sol–gel method. Its atomic and electronic structural descriptions are determined by a combination of several diffraction and spectroscopy techniques such as synchrotron X-ray powder diffraction and synchrotron X-ray absorption spectroscopy at V and Fe K edges, 57Fe Mössbauer, and 31P solid-state nuclear magnetic resonance spectroscopy. The crystal structure of this newly obtained phase is similar to that of Na3(VO)2(PO4)2F, with a random distribution of Fe3+ ions over vanadium sites. Even though Fe3+ and V4+ ions situate on the same crystallographic position, their local environment can be studied separately using 57Fe Mössbauer and X-ray absorption spectroscopy at Fe and V K edges, respectively. The Fe3+ ion resides in a symmetric octahedral environment, while the octahedral site of V4+ is greatly distorted due to the presence of the vanadyl bond. No electrochemical activity of the Fe4+/Fe3+ redox couple is detected, at least up to 5 V, whereas the reduction of Fe3+ to Fe2+ has been observed at ∼1.5 V versus Na+/Na through the insertion of 0.5 Na+ into Na3(VO)Fe(PO4)2F2. Comparing to Na3(VO)2(PO4)2F, the electrochemical profile of Na3(VO)Fe(PO4)2F2 in the same cycling condition shows a smaller polarization which could be due to a slight improvement in Na+ diffusion process thanks to the presence of Fe3+ in the framework. Furthermore, the desodiation mechanism occurring upon charging is investigated by operando synchrotron X-ray diffraction and operando synchrotron X-ray absorption at V K edge.
dc.description.sponsorshipSpectromètre EXAFS Rapide pour Cinétiques Chimiques
dc.description.sponsorshipLaboratory of excellency for electrochemical energy storage
dc.description.sponsorshipBatteries à ions sodium pour des robots télécommandés - ANR-13-DESC-0001
dc.language.isoen
dc.publisherWashington, D.C. : American Chemical Society
dc.subject.enNa+ diffusivity
dc.subject.ensolid-state NMR
dc.subject.ensynchrotron X-ray diffraction
dc.subject.enNa3V2(PO4)2F3
dc.subject.enNa3(VO)2(PO4)2F
dc.subject.enFe3+ substitution
dc.subject.ensodium-ion batteries
dc.subject.ensol−gel synthesis
dc.subject.enFe 3+ -substitution
dc.subject.ensol-gel synthesis
dc.subject.enNa + diffusivity
dc.title.enMonitoring the crystal structure and the electrochemical properties of Na3(VO)2(PO4)2F through Fe3+ substitution
dc.typeArticle de revue
dc.identifier.doi10.1021/acsami.9b14249
dc.subject.halChimie/Matériaux
dc.description.sponsorshipEuropeNa-Ion bAttery Demonstration for Electric Storage
bordeaux.journalACS Applied Materials & Interfaces
bordeaux.page38808-38818
bordeaux.volume11
bordeaux.issue42
bordeaux.peerReviewedoui
hal.identifierhal-02318063
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02318063v1
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