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Controlled nanostructuration of cobalt oxyhydroxide electrode material for hybrid supercapacitors

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.authorINVERNIZZI, Ronan
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
hal.structure.identifierAdvanced Lithium Energy Storage Systems - ALISTORE-ERI [ALISTORE-ERI]
dc.contributor.authorGUERLOU-DEMOURGUES, Liliane
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.authorWEILL, François
hal.structure.identifierInstitut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM]
dc.contributor.authorLEMOINE, Alexia
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorDOURGES, Marie-Anne
hal.structure.identifierInstitut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM]
dc.contributor.authorBARAILLE, Isabelle
hal.structure.identifierInstitut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM]
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
dc.contributor.authorFLAHAUT, Delphine
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
hal.structure.identifierAdvanced Lithium Energy Storage Systems - ALISTORE-ERI [ALISTORE-ERI]
dc.contributor.authorOLCHOWKA, Jacob
dc.date.issued2021
dc.identifier.issn1996-1944
dc.description.abstractEnNanostructuration is one of the most promising strategies to develop performant electrode materials for energy storage devices, such as hybrid supercapacitors. In this work, we studied the influence of precipitation medium and the use of a series of 1-alkyl-3-methylimidazolium bromide ionic liquids for the nanostructuration of β(III) cobalt oxyhydroxides. Then, the effect of the nanostructuration and the impact of the different ionic liquids used during synthesis were investigated in terms of energy storage performances. First, we demonstrated that forward precipitation, in a cobalt-rich medium, leads to smaller particles with higher specific surface areas (SSA) and an enhanced mesoporosity. Introduction of ionic liquids (ILs) in the precipitation medium further strongly increased the specific surface area and the mesoporosity to achieve well-nanostructured materials with a very high SSA of 265 m2/g and porosity of 0.43 cm3/g. Additionally, we showed that ILs used as surfactant and template also functionalize the nanomaterial surface, leading to a beneficial synergy between the highly ionic conductive IL and the cobalt oxyhydroxide, which lowers the resistance charge transfer and improves the specific capacity. The nature of the ionic liquid had an important influence on the final electrochemical properties and the best performances were reached with the ionic liquid containing the longest alkyl chain.
dc.description.sponsorshipLaboratory of excellency for electrochemical energy storage - ANR-10-LABX-0076
dc.language.isoen
dc.publisherMDPI
dc.title.enControlled nanostructuration of cobalt oxyhydroxide electrode material for hybrid supercapacitors
dc.typeArticle de revue
dc.identifier.doi10.3390/ma14092325
dc.subject.halChimie/Matériaux
bordeaux.journalMaterials
bordeaux.page2325
bordeaux.volume14
bordeaux.issue9
bordeaux.peerReviewedoui
hal.identifierhal-03239512
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03239512v1
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