Active carbon/graphene hydrogel nanocomposites as a symmetric device for supercapacitors

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dc.authorid0000-0002-9950-713X
dc.authorid0000-0002-1806-0330
dc.authorid0000-0002-4277-2127
dc.authorid0000-0001-6950-6753
dc.authorscopusid9735216100
dc.authorscopusid16241035900
dc.authorscopusid57190170387
dc.authorscopusid12786048300
dc.authorscopusid56784154100
dc.authorscopusid6701764282
dc.authorscopusid14041263600
dc.authorwosidcandan, idris/F-4951-2018
dc.authorwosidAtes, Murat/G-3798-2012
dc.authorwosidüner, osman/B-5357-2018
dc.authorwosidGEÇGEL, ÜNAL/AAC-9487-2019
dc.contributor.authorAteş, Murat
dc.contributor.authorÇınar, Damla
dc.contributor.authorÇalışkan, Sinan
dc.contributor.authorGecgel, Unal
dc.contributor.authorUner, Osman
dc.contributor.authorBayrak, Yüksel
dc.contributor.authorCandan, İdris
dc.date.accessioned2022-05-11T14:30:54Z
dc.date.available2022-05-11T14:30:54Z
dc.date.issued2016
dc.departmentFakülteler, Fen Edebiyat Fakültesi, Kimya Bölümü
dc.description.abstractActivated carbons (ACs) are successfully synthesized from Elaeagnus grain by a simple chemical synthesis methodology and demonstrated as novel, suitable supercapacitor electrode materials for graphene hydrogel (GH)/AC nanocomposites. GH/AC nanocomposites are synthesized via hydrothermal process at temperature of 180 degrees C. The low-temperature thermal exfoliation approach is convenient for mass production of graphene hydrogel (GH) at low cost and it can be used as electrode material for energy storage applications. The GH/AC nanocomposites exhibit better electrochemical performances than the pure GH. Electrochemical performance of the electrodes is studied by cyclic voltammetry, and galvanostatic charge-discharge measurements in 1.0 M H2SO4 solution. A remarkable specific capacitance of 602.36 Fg(1) (based on GH/AC nanocomposites for 0.4 g AC) is obtained at a scan rate of 1 mVs(1) in 1 M H2SO4 solution and 155.78 Fg(1) for GH. The specific capacitance was increased 3.87 times for GH/AC compared to GH electrodes. Moreover, the GH/AC nanocomposites for 0.2 g AC present excellent long cycle life with 99.8% specific capacitance retained after 1000 charge/discharge processes. Herein, ACs prepared from Elaeagnus grain are synthesized GH and AC supercapacitor device for high-performance electrical energy storage devices as a promising substitute to conventional electrode materials for EDLCs.
dc.identifier.doi10.1080/1536383X.2016.1174115
dc.identifier.endpage434
dc.identifier.issn1536-383X
dc.identifier.issn1536-4046
dc.identifier.issue7en_US
dc.identifier.scopus2-s2.0-84978085709
dc.identifier.scopusqualityQ2
dc.identifier.startpage427
dc.identifier.urihttps://doi.org/10.1080/1536383X.2016.1174115
dc.identifier.urihttps://hdl.handle.net/20.500.11776/7217
dc.identifier.volume24
dc.identifier.wosWOS:000380155500003
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorAteş, Murat
dc.institutionauthorÇınar, Damla
dc.institutionauthorÇalışkan, Sinan
dc.language.isoen
dc.publisherTaylor & Francis Inc
dc.relation.ispartofFullerenes Nanotubes and Carbon Nanostructures
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectthermal exfoliation
dc.subjectSymmetric supercapacitor
dc.subjectEnergy density
dc.subjectGraphene hydrogel
dc.subjectActive carbon
dc.subjectPower density
dc.subjectHigh-Performance Supercapacitors
dc.subjectElectrochemical Energy-Storage
dc.subjectGraphene-Based Composites
dc.subjectReduced Graphite Oxide
dc.subjectChemical Activation
dc.subjectPorous Carbon
dc.subjectSurface-Area
dc.subjectRemoval
dc.subjectConstruction
dc.subjectElectrodes
dc.titleActive carbon/graphene hydrogel nanocomposites as a symmetric device for supercapacitors
dc.typeArticle

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