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Impact of the F– for O2– substitution in Na3V2(PO4)2F3–yOy on their transport properties and electrochemical performance

hal.structure.identifierLaboratoire de Chimie de la Matière Condensée de Paris [LCMCP]
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
dc.contributor.authorFANG, Runhe
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.authorOLCHOWKA, Jacob
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.authorPABLOS, Chloé
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorNUERNBERG, Rafael
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
hal.structure.identifierLaboratoire de Chimie de la Matière Condensée de Paris [LCMCP]
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
dc.contributor.authorCASSAIGNON, Sophie
dc.date.issued2022-01-24
dc.identifier.issn2574-0962
dc.description.abstractEnThe series of polyanionic compounds Na3V 3+ 2-yV 4+ y(PO4)2F3-yOy (0 ≤ y ≤ 2) attracts much attention as positive electrode material for Na-ion batteries, because of its high operating potential and stable cycling performance. A series of nanospherical Na3V 3+ 2-yV 4+ y(PO4)2F3-yOy (NVPFOy) materials with y = 0.8, 1.35, 1.6 and 2 was synthesized using a solvothermal reaction and changes in the vanadium average oxidation state were fully characterized combining analyses by Raman and infrared spectroscopies and X-ray diffraction. Raman spectroscopy, beyond checking for the absence of a carbon coating, was in fact used for its sensitivity to the vanadium environment and turn out to be an efficient characterization technique to estimate the oxygen content within the Na3V 3+ 2-yV 4+ y(PO4)2F3-yOy family. The impact of the oxygen content on the transport properties was evaluated by electrochemical impedance spectroscopy. The material with y = 1.35 demonstrates the smallest electrical resistivity in the series, as well as the best rate capability and cyclability upon long-term cycling, despite no carbon coating and a high mass loading positive electrode.
dc.description.sponsorshipLaboratory of excellency for electrochemical energy storage - ANR-10-LABX-0076
dc.language.isoen
dc.publisherACS
dc.subject.enNa-ion batteries
dc.subject.enPolyanionic positive electrode materials
dc.subject.enNa3V2(PO4)2F3
dc.subject.enNa3(VO)2(PO4)2F
dc.subject.enTransport properties
dc.subject.enRaman spectroscopy
dc.title.enImpact of the F– for O2– substitution in Na3V2(PO4)2F3–yOy on their transport properties and electrochemical performance
dc.typeArticle de revue
dc.identifier.doi10.1021/acsaem.1c03446
dc.subject.halChimie/Matériaux
bordeaux.journalACS Applied Energy Materials
bordeaux.page1065-1075
bordeaux.volume5
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-03573801
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03573801v1
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