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Spinel materials for Li-ion batteries: new insights obtained by operando neutron and synchrotron X-ray diffraction

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierInstitut Laue-Langevin [ILL]
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.authorBIANCHINI, Matteo
hal.structure.identifierEuropean Synchrotron Radiation Facility [ESRF]
dc.contributor.authorFAUTH, François
hal.structure.identifierInstitut Laue-Langevin [ILL]
dc.contributor.authorSUARD, Emmanuelle
hal.structure.identifierLaboratoire réactivité et chimie des solides - UMR CNRS 7314 UPJV [LRCS]
dc.contributor.authorLERICHE, Jean-Bernard
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
hal.structure.identifierAdvanced Lithium Energy Storage Systems - ALISTORE-ERI [ALISTORE-ERI]
hal.structure.identifierLaboratoire réactivité et chimie des solides - UMR CNRS 7314 UPJV [LRCS]
dc.contributor.authorMASQUELIER, Christian
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
hal.structure.identifierAdvanced Lithium Energy Storage Systems - ALISTORE-ERI [ALISTORE-ERI]
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCROGUENNEC, Laurence
dc.date.issued2015
dc.identifier.issn0921-5107
dc.description.abstractEnIn the last few decades Li-ion batteries changed the way we store energy, becoming a key element of our everyday life. Their continuous improvement is tightly bound to the understanding of lithium (de)intercalation phenomena in electrode materials. Here we address the use of operando diffraction techniques to understand these mechanisms. We focus on powerful probes such as neutrons and synchrotron X-ray radiation, which have become increasingly familiar to the electrochemical community. After discussing the general benefits (and drawbacks) of these characterization techniques and the work of customization required to adapt standard electrochemical cells to an operando diffraction experiment, we highlight several very recent results. We concentrate on important electrode materials such as the spinels Li1 + xMn2 − xO4 (0 ≤ x ≤ 0.10) and LiNi0.4Mn1.6O4. Thorough investigations led by operando neutron powder diffraction demonstrated that neutrons are highly sensitive to structural parameters that cannot be captured by other means (for example, atomic Debye–Waller factors and lithium site occupancy). Synchrotron radiation X-ray powder diffraction reveals how LiMn2O4 is subject to irreversibility upon the first electrochemical cycle, resulting in severe Bragg peak broadening. Even more interestingly, we show for the first time an ordering scheme of the elusive composition Li0.5Mn2O4, through the coexistence of Mn3+:Mn4+ 1:3 cation ordering and lithium/vacancy ordering. More accurately written as Li0.5Mn3+0.5Mn4+1.5O4, this intermediate phase loses the [Fd\overline 3m] symmetry, to be correctly described in the P213 space group.
dc.language.isoen
dc.publisherElsevier
dc.subject.enbatteries
dc.subject.enspinel
dc.subject.ensynchrotron X-ray diffraction
dc.subject.enneutron diffraction
dc.subject.enoperando
dc.title.enSpinel materials for Li-ion batteries: new insights obtained by operando neutron and synchrotron X-ray diffraction
dc.typeArticle de revue
dc.identifier.doi10.1107/S2052520615017199
dc.subject.halChimie/Matériaux
bordeaux.journalMaterials Science and Engineering: B
bordeaux.page14
bordeaux.volume71
bordeaux.issue6
bordeaux.peerReviewedoui
hal.identifierhal-01232369
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01232369v1
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