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Stabilization and improvement of energy storage performance of high mass loading cobalt hydroxide electrode by surface functionalization

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierAdvanced Lithium Energy Storage Systems - ALISTORE-ERI [ALISTORE-ERI]
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
dc.contributor.authorOLCHOWKA, Jacob
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorINVERNIZZI, Ronan
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 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.authorALLOUCHE, Joachim
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.identifierAdvanced Lithium Energy Storage Systems - ALISTORE-ERI [ALISTORE-ERI]
hal.structure.identifierRéseau sur le stockage électrochimique de l'énergie [RS2E]
dc.contributor.authorGUERLOU-DEMOURGUES, Liliane
dc.date.issued2020-10-06
dc.identifier.issn0013-4651
dc.description.abstractEnNano-oxides and hydroxides generate great interest as promising positive electrode materials for the development of high energy density supercapacitors. However, their usually limited ionic and electronic conductivities significantly decrease their energy storage performances when increasing the electrode's mass loading. Here, we report on a sonochemical approach to functionalize the surface of Co(OH)2 nanomaterials by EmimBF4 ionic liquid that greatly improves the stability and the electrochemical performances of high mass loading electrodes (13 mg cm−2). This surface functionalization boosts the transport properties and strongly enhances the capacity as well as the capacity retention at higher current densities compared to basic Co(OH)2 (e.g. 113.5 C g−1 vs 59.2 C g−1 at 1 A g−1). Additionally, the protective layer formed by the ionic liquid stabilizes the electrode material upon cycling in KOH aqueous electrolyte and protects the material from oxidation upon open-air storage.
dc.description.sponsorshipLaboratory of excellency for electrochemical energy storage - ANR-10-LABX-0076
dc.language.isoen
dc.publisherElectrochemical Society
dc.subject.enSupercapacitors
dc.subject.enElectrochemical energy storage
dc.subject.enSurface modification
dc.subject.enCobalt hydroxide
dc.subject.enIonic Liquids
dc.title.enStabilization and improvement of energy storage performance of high mass loading cobalt hydroxide electrode by surface functionalization
dc.typeArticle de revue
dc.identifier.doi10.1149/1945-7111/ab9a03
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of The Electrochemical Society
bordeaux.page100527 (7 p.)
bordeaux.volume167
bordeaux.issue10
bordeaux.peerReviewedoui
hal.identifierhal-02972539
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02972539v1
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