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Insight into the atomic structure of cycled lithium-rich layered oxide Li1.20Mn0.54Co0.13Ni0.13O2 using HAADF STEM and electron Nanodiffraction

hal.structure.identifierGroupe de physique des matériaux [GPM]
dc.contributor.authorGENEVOIS, Cécile
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierToyota Motor Europe (BELGIUM)
dc.contributor.authorKOGA, Hideyuki
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCROGUENNEC, Laurence
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.authorDELMAS, Claude
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorWEILL, François
dc.date.issued2015
dc.identifier.issn1932-7447
dc.description.abstractEnAberration-corrected high-angle annular dark-field scanning transmission electron microscopy (HAADF STEM) and electron nanodiffraction investigations have been carried out to follow changes in the local atomic structure of three Li-rich layered oxides recovered after a single charge–discharge cycle, performed in different conditions. The structure of the pristine material Li1.20Mn0.54Co0.13Ni0.13O2 was fully characterized. It was then compared to those of the materials recovered after one electrochemical cycle in a lithium battery, with the upper voltage limit being either just below the voltage of the irreversible “plateau” typical of Li-rich layered oxides or just above. An in-depth study of the material obtained chemically, after oxidation to deintercalate Li and then reduction to reintercalate Li, was also performed for comparison. The main message of this paper is that the “plateau” is not associated with an extended structural reorganization of the material. The irreversible processes associated with cation migration are restricted to the external part of the particles. The results reported here support the oxidation of oxygen ions we earlier proposed to occur reversibly in the core of the particles and to be the actual origin for the exceptional capacity of Li- and Mn-rich layered oxides.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.title.enInsight into the atomic structure of cycled lithium-rich layered oxide Li1.20Mn0.54Co0.13Ni0.13O2 using HAADF STEM and electron Nanodiffraction
dc.typeArticle de revue
dc.identifier.doi10.1021/jp509388j
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Physical Chemistry C
bordeaux.page75-83
bordeaux.volume119
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-01141683
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01141683v1
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