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Fabrication of electrochemically reduced graphene oxide/cobalt oxide composite for charge storage electrodes

2015-10-15Journal article Restricted access
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dc.contributor.authorGarcía-Gómez, A.
dc.contributor.authorDuarte, R. G.
dc.contributor.authorEugénio, Sónia
dc.contributor.authorSilva, Maria Teresa Oliveira de Moura e
dc.contributor.authorCarmezim, M. J.
dc.contributor.authorMontemor, Maria de Fátima
dc.date.accessioned2016-04-19T14:55:06Z
dc.date.available2016-04-19T14:55:06Z
dc.date.issued2015-10-15
dc.description.abstractElectrochemically-reduced graphene oxide (Er-GO) and cobalt oxides (CoOx) were co-electrodeposited by cyclic voltammetry, from an electrolyte containing graphene oxide and cobalt nitrate, directly onto a stainless steel substrate to produce composite electrodes presenting high charge storage capacity. The electrochemical response of the composite films was optimized by studying the parameters applied during the electrodeposition process, namely the number of cycles, scan rate and ratio between GO/Co(NO3)(2) concentrations in the electrolyte. It is shown that, if the appropriate conditions are selected, it is possible to produced binder-free composite electrodes with improved electrochemical properties using a low-cost, facile and scalable technique. The optimized Er-GO/CoOx developed in this work exhibits a specific capacitance of 608 F g(-1) at a current density of 1 A g(-1) and increased reversibility when compared to single CoOx. (C) 2015 Elsevier B.V. All rights reserved.pt_PT
dc.identifier.citationGARCÍA-GÓMEZ, A.; [et al] - Fabrication of electrochemically reduced graphene oxide/cobalt oxide composite for charge storage electrodes. Journal of Electroanalytical Chemistry. ISSN 1572-6657. Vol. 755 (2015), pp. 151-157.pt_PT
dc.identifier.doi10.1016/j.jelechem.2015.07.053pt_PT
dc.identifier.issn1572-6657
dc.identifier.issn1873-2569
dc.identifier.urihttp://hdl.handle.net/10400.21/6040
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevier Science SApt_PT
dc.subjectElectrochemically-reduced graphene oxidept_PT
dc.subjectCobalt oxidespt_PT
dc.subjectElectrodepositionpt_PT
dc.subjectCharge storagept_PT
dc.titleFabrication of electrochemically reduced graphene oxide/cobalt oxide composite for charge storage electrodespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage157pt_PT
oaire.citation.startPage151pt_PT
oaire.citation.titleJournal of Electroanalytical Chemistrypt_PT
oaire.citation.volume755pt_PT
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT

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