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An asymmetric sodium extraction/insertion mechanism for the Fe/V-Mixed NASICON Na4FeV(PO4)3

hal.structure.identifierLaboratoire réactivité et chimie des solides - UMR CNRS 7314 UPJV [LRCS]
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorPARK, Sunkyu
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.authorCHOTARD, Jean-Noël
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.identifierTiamat Energy
dc.contributor.authorMOOG, Iona
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDUTTINE, Mathieu
hal.structure.identifierALBA Synchrotron light source [Barcelone]
dc.contributor.authorFAUTH, François
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
dc.contributor.authorIADECOLA, Antonella
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.authorCROGUENNEC, Laurence
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.authorMASQUELIER, Christian
dc.date.issued2022
dc.identifier.issn0897-4756
dc.description.abstractEnVanadium multi redox reactions of V4+/3+ and V5+/4+ can contribute to significant capacity gain in positive electrodes for Na-Ion batteries, but the activation of the V5+/4+ redox couple is often accompanied by asymmetric and irreversible electrochemical reactions that are very important to understand for developing high capacity materials while maintaining the structural stability. Here, the asymmetric Na+ extraction/insertion process in Fe/V-mixed NASICON Na4FeV(PO4)3 electrode material is thoroughly investigated from both local and bulk perspectives. X-ray diffraction analysis demonstrates that the Na(1) site is depopulated at the third charge domain when the V5+/4+ redox couple is activated. Local environments of Fe and V were investigated through Mössbauer and X-ray absorption spectroscopies. The results point toward the existence of a distorted VO6 octahedral environment, including a short V–O bond, when the V5+/4+ redox couple is activated at high voltage. This study presents valuable aspects of the asymmetric behavior during multielectron reactions that are commonly observed in V-based NASICON materials.
dc.description.sponsorshipSpectromètre EXAFS Rapide pour Cinétiques Chimiques - ANR-10-EQPX-0045
dc.description.sponsorshipLaboratory of excellency for electrochemical energy storage
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.title.enAn asymmetric sodium extraction/insertion mechanism for the Fe/V-Mixed NASICON Na4FeV(PO4)3
dc.typeArticle de revue
dc.identifier.doi10.1021/acs.chemmater.2c00501
dc.subject.halChimie/Matériaux
dc.subject.halChimie/Chimie inorganique
dc.subject.halChimie/Cristallographie
bordeaux.journalChemistry of Materials
bordeaux.page4142-4152
bordeaux.volume34
bordeaux.issue9
bordeaux.peerReviewedoui
hal.identifierhal-03671793
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03671793v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Chemistry%20of%20Materials&rft.date=2022&rft.volume=34&rft.issue=9&rft.spage=4142-4152&rft.epage=4142-4152&rft.eissn=0897-4756&rft.issn=0897-4756&rft.au=PARK,%20Sunkyu&CHOTARD,%20Jean-No%C3%ABl&CARLIER,%20Dany&MOOG,%20Iona&DUTTINE,%20Mathieu&rft.genre=article


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