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Vanadium diphosphides as negative electrodes for secondary Li-ion batteries

hal.structure.identifierLaboratoire réactivité et chimie des solides - UMR CNRS 7314 UPJV [LRCS]
dc.contributor.authorGILLOT, F.
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]
dc.contributor.authorBEKAERT, Emilie
hal.structure.identifierLaboratoire réactivité et chimie des solides - UMR CNRS 7314 UPJV [LRCS]
dc.contributor.authorDUPONT, L.
hal.structure.identifierLaboratoire réactivité et chimie des solides - UMR CNRS 7314 UPJV [LRCS]
dc.contributor.authorMORCRETTE, Mathieu
hal.structure.identifierLaboratoire des Agrégats Moléculaires et Matériaux Inorganiques [LAMMI]
dc.contributor.authorMONCONDUIT, Laure
hal.structure.identifierLaboratoire réactivité et chimie des solides - UMR CNRS 7314 UPJV [LRCS]
dc.contributor.authorTARASCON, Jean‐marie
dc.date.issued2007
dc.identifier.issn0378-7753
dc.description.abstractEnWe report on the Li electrochemical reactivity of amorphous and crystalline VP2, synthesized by ball-milling and by 600 °C heat treatment of a ball-milled sample, respectively. The amorphous sample can reversibly react with 3.5 Li per formula unit as compared to solely 2.5 for the crystalline one. However in both cases there is a rapid capacity decay upon cycling that is more pronounced in the case of the crystalline sample. Complementary X-rays, HTREM and NMR tend to show that the Li reactivity mechanism differs from the classical conversion reactions since neither V nanoparticles nor the formation of Li3P were detected, as opposed to some of the other MP2 compounds (M = Ni or Cu). Besides structural phase variations within the 3d metal-based binary phosphide series, the possibility of a change in the nature of the redox centre upon lithiation from cation (M) to anion (P) is evoked.
dc.language.isoen
dc.publisherElsevier
dc.subject.enBall-milling
dc.subject.enCapacity retention
dc.subject.enLithium ion batteries
dc.subject.enVanadium diphosphides
dc.title.enVanadium diphosphides as negative electrodes for secondary Li-ion batteries
dc.typeArticle de revue
dc.identifier.doi10.1016/j.jpowsour.2007.05.043
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Power Sources
bordeaux.page877-885
bordeaux.volume172
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-00182414
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00182414v1
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