Improving the rate capability of microporous activated carbon-based supercapacitor electrodes using non-porous graphene oxide

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dc.contributor.authorInal, I. Isil Gurten
dc.contributor.authorKoyuncu, Filiz
dc.contributor.authorPerez-Page, Maria
dc.date.accessioned2024-04-24T16:02:16Z
dc.date.available2024-04-24T16:02:16Z
dc.date.issued2023
dc.departmentDicle Üniversitesien_US
dc.description.abstractIn this work, high-rate-capability supercapacitor electrodes based on a green, sustainable, graphene oxide-assisted microporous activated carbon (AC) were developed by a facile method. Highly microporous ACs were produced from tea factory waste using different amounts of potassium carbonate (K2CO3). Non-porous GO sheets were prepared by anodic electrochemical exfoliation in a 0.1 M (NH4)(2)SO4 aqueous solution. The materials were characterized by N-2 adsorption-desorption, particle size, XPS, Raman, and SEM techniques. The electrochemical performance of ACs was examined by using a 6 M KOH electrolyte with CV, GCD, and EIS methods. It was determined that the activated carbon sample (AC-IR1.5), prepared using a mass ratio of (1.0:1.5) of tea factory waste: K2CO3, exhibited the best electrode performance. These highly reversible best-performing AC-based electrodes prepared from AC-IR1.5 with the highest micropore volume fraction were physically mixed with GO in mass ratios, (AC-IR1.5: GO) of 90:10, 75:25, 60:40, and examined as the supercapacitor electrodes along with AC-based electrodes. The electrochemical characterization results showed that a significant enhancement in the rate capability was achieved by AC-IR1.5: GO electrodes compared to AC-based ones. The capacitance retention of AC-IR1.5: GO (75:25) was found to be at least twice as higher (84%) than that of AC-based electrodes (39%) at a high current density of 10 A g(- 1).en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [218M562]en_US
dc.description.sponsorshipAcknowledgementsThis work was supported by Scientific and Technological Research Council of Turkey (TUBITAK) (Project No: 218M562).en_US
dc.identifier.doi10.1007/s10934-023-01459-7
dc.identifier.issn1380-2224
dc.identifier.issn1573-4854
dc.identifier.scopus2-s2.0-85153753014
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1007/s10934-023-01459-7
dc.identifier.urihttps://hdl.handle.net/11468/14715
dc.identifier.wosWOS:000975855000001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofJournal of Porous Materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectActivated Carbonen_US
dc.subjectMicroporosityen_US
dc.subjectGraphene Oxideen_US
dc.subjectRate Capabilityen_US
dc.subjectSupercapacitoren_US
dc.titleImproving the rate capability of microporous activated carbon-based supercapacitor electrodes using non-porous graphene oxideen_US
dc.titleImproving the rate capability of microporous activated carbon-based supercapacitor electrodes using non-porous graphene oxide
dc.typeArticleen_US

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