Organic Electrolytes for Graphene-Based Supercapacitor: Liquid, Gel or Solid

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dc.citation.epage160en_US
dc.citation.spage155en_US
dc.citation.volumeNumber7en_US
dc.contributor.authorKovalska, E.en_US
dc.contributor.authorKocabas, C.en_US
dc.date.accessioned2018-04-12T10:53:51Z
dc.date.available2018-04-12T10:53:51Z
dc.date.issued2016en_US
dc.departmentDepartment of Physicsen_US
dc.description.abstractThe electrolyte is an important and decisive factor in battery, capacitor and supercapacitor fabrication. Here we report how electrolyte's provenance and structure effect on the electro-optical properties of the graphene-based supercapacitor. The three organic electrolytes were synthesized: liquid electrolyte, which on the basis of propylene carbonate (PC), gel electrolyte - polyvinyl alcohol (PVA) and solid electrolyte - polyvinylidene fluoride (PVDF). As an application, we demonstrate an optical modulator using supercapacitor structure built by graphene electrodes and prepared electrolytes. All organic electrolyte-based supercapacitors potentiate optical modulation of graphene electrodes over a broad range of wavelengths, under ambient conditions. We reveal higher capacitance (78 μF/cm2) for a supercapacitor with gel electrolyte during various bias voltages. We represent the increasing of light transmission at 3 times using solid electrolyte, in comparison with liquid and gel electrolytes and illustrate the supercapacitor possibility with gel electrolyte to operate under negative voltage. Consequently, we suggest applying of solid electrolyte as a more appropriate electrolyte for fabrication of graphene-based supercapacitor. We anticipate that using of solid electrolyte allows us to get desired electro-optical properties, minimize the size of the device and vary it shape.en_US
dc.description.provenanceMade available in DSpace on 2018-04-12T10:53:51Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 179475 bytes, checksum: ea0bedeb05ac9ccfb983c327e155f0c2 (MD5) Previous issue date: 2016en
dc.identifier.doi10.1016/j.mtcomm.2016.04.013en_US
dc.identifier.issn2352-4928
dc.identifier.urihttp://hdl.handle.net/11693/36802
dc.language.isoEnglishen_US
dc.publisherElsevier Ltden_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/j.mtcomm.2016.04.013en_US
dc.source.titleMaterials Today Communicationsen_US
dc.subjectElectrical and electro-optical featuresen_US
dc.subjectGraphene-based supercapacitoren_US
dc.subjectOptical modulatoren_US
dc.subjectOrganic electrolyteen_US
dc.titleOrganic Electrolytes for Graphene-Based Supercapacitor: Liquid, Gel or Soliden_US
dc.typeArticleen_US

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