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dc.contributor.authorGuardia, Lauraes_ES
dc.contributor.authorSuárez Fernández, Loretoes_ES
dc.contributor.authorQuerejeta Montes, Nausikaes_ES
dc.contributor.authorVretenár, Viliames_ES
dc.contributor.authorKotrusz, Peteres_ES
dc.contributor.authorSkákalová, Vieraes_ES
dc.contributor.authorÁlvarez Centeno, Teresaes_ES
dc.date.accessioned2019-01-17T08:25:41Z-
dc.date.available2019-01-17T08:25:41Z-
dc.date.issued2018-12-29-
dc.identifier.citationElectrochimica Acta 298: 910-917 (2019)es_ES
dc.identifier.issn0013-4686-
dc.identifier.urihttp://hdl.handle.net/10261/174221-
dc.description.abstractWe present a simple and effective alternative which optimizes electrodes based on low-cost carbons for high-performance supercapacitors. The combination with reduced graphene oxide (rGO) greatly improves the operation of microporous carbons easily produced by one-pot activation of grape seeds. The use of composite electrodes with rGO lowers the supercapacitor resistance and enables a much higher rate capability. The mixture of rGO flakes and particles of a highly porous carbon obtained by KOH activation allows retaining the high capacitance of 260 F g−1 of the standard electrodes at 1 mA cm−2 in aqueous H2SO4 whereas the value at 200 mA cm−2 is increased by around 2.4 times. Consequently, at high current density, the capacitor assembled with these composites stores eight times more energy and the power density is multiplied by four. The synergy between rGO and an ultramicroporous carbon produced by CO2-activation results extremely profitable, the cell assembled with composite electrodes reaching three times more energy and power at 200 mA cm−2 than the best performance of the standard counterpart. More importantly, the higher density of the composite electrodes leads to a capacitance of around 200 F cm−3 which translates into a remarkable improvement in the supercapacitor operation normalized to volume.es_ES
dc.description.sponsorshipT.A.C. gratefully acknowledges the funding from CSIC [Proyecto Intramural Especial 2016 8 0E035]. V.V. and V.S. thank the support by Slovak Research and Development Agency under the contract APVV-16-0319.es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.relation.isversionofPostprintes_ES
dc.rightsembargoedAccesses_ES
dc.subjectBiomass derived-carbones_ES
dc.subjectReduced graphene oxidees_ES
dc.subjectElectrodees_ES
dc.subjectSupercapacitores_ES
dc.subjectPoweres_ES
dc.titleBiomass waste-carbon/reduced graphene oxide composite electrodes for enhanced supercapacitorses_ES
dc.typeartículoes_ES
dc.identifier.doi10.1016/j.electacta.2018.12.160-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttps://doi.org/10.1016/j.electacta.2018.12.160es_ES
dc.embargo.terms2020-12-30es_ES
dc.rights.licensehttps://creativecommons.org/licenses/by-nc-nd/4.0/es_ES
dc.contributor.funderConsejo Superior de Investigaciones Científicas (España)es_ES
dc.relation.csices_ES
oprm.item.hasRevisionno ko 0 false*
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003339es_ES
dc.contributor.orcidÁlvarez Centeno, Teresa [0000-0001-8405-7298]es_ES
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