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Effect of the particles morphology on the electrochemical performance of Na3V2(PO4)2F3-yOy

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorOLCHOWKA, Jacob
hal.structure.identifierLaboratoire de Chimie de la Matière Condensée de Paris [LCMCP]
dc.contributor.authorFANG, Runhe
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorPABLOS, Chloé
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.authorCARLIER, Dany
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCROGUENNEC, Laurence
hal.structure.identifierLaboratoire de Chimie de la Matière Condensée de Paris [LCMCP]
dc.contributor.authorCASSAIGNON, Sophie
dc.date.issued2022
dc.description.abstractEnAmong all the positive electrode materials explored for Na-ion batteries, the family of Na3VIII2-y(VIVO)y(PO4)2F3-y (NVPFOy) has attracted extensive attention for its high operating voltage and structural stability. In order to promote better performance at high rates, it appears interesting to consider the correlation between NVPFOy’s composition, morphology (size and shape) and electrochemical properties. Here, solvothermal syntheses were considered in order to obtain a series of NVPFOy compounds showing different morphologies (such as nanospheres, flakes, cylindrical aggregates or desert-roses) by playing on different synthesis parameters like water/ethanol ratio, stoichiometry of the precursors’ mixture, heating rate, and the presence or not of a surfactant. Four compounds presenting different morphology have been fully characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, infrared, NMR and XPS spectroscopies. Their electrochemical properties are studied using electrodes rich in active material in order to better observe the influence of the morphology on the energy storage performance and are compared to those of Na3V2(PO4)2F3 and Na3V2(PO4)2FO2 reference materials obtained by solid-state synthesis and with shapeless morphology.
dc.description.sponsorshipLaboratory of excellency for electrochemical energy storage - ANR-10-LABX-0076
dc.language.isoen
dc.publisherWiley
dc.subject.enmorphology design
dc.subject.enNa-ion batteries
dc.subject.enNa3V2(PO4)2F3
dc.subject.enNa3(VO)2(PO4)2F
dc.subject.enpolyanions
dc.subject.ensynthesis design
dc.title.enEffect of the particles morphology on the electrochemical performance of Na3V2(PO4)2F3-yOy
dc.typeArticle de revue
dc.identifier.doi10.1002/batt.202100179
dc.subject.halChimie/Matériaux
bordeaux.journalBatteries & Supercaps
bordeaux.pagee202100179 (10 p.)
bordeaux.volume5
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-03406159
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03406159v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Batteries%20&%20Supercaps&rft.date=2022&rft.volume=5&rft.issue=1&rft.spage=e202100179%20(10%20p.)&rft.epage=e202100179%20(10%20p.)&rft.au=OLCHOWKA,%20Jacob&FANG,%20Runhe&PABLOS,%20Chlo%C3%A9&SANZ%20CAMACHO,%20Paula&CARLIER,%20Dany&rft.genre=article


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