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Realization and characterization of flexible supercapacitors based on doped graphene electrodes

Realization and characterization of flexible supercapacitors based on doped graphene electrodes High energy consumption leads to the development of various energy types. As a result, the storage of these different types of energy becomes a key issue. Supercapacitors, as one important energy storage device, have gained much attention especially on electrode materials. The aim of this work is the realization of a flexible supercapacitor using graphene-doped metal oxides graphene/polypyrrole (GP/PPY) nanocomposites as electrodes. Exfoliation and in situ polymerisation are used for graphene and polypyrrole preparation. Metal oxide nanoparticles (Fe2O3 and NiO) are synthesised via green synthesis technique that based on olive leaves’ extract. Gel polymer (polyvinyl alcohol (PVA)—potassium hydroxide (KOH)—hydroquinone (HQ)) is used as an electrolyte and separator. The structural and morphological properties of these components are characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and scanning electron microscopy (SEM). Electrochemical tests are used to study the effect of the nanooxide particles and the different components of the electrolyte and the separator on the supercapacitor behavior. These tests show a stable supercapacitor for more than 50,000 cycles and different values of the specific capacity are obtained as a function of the combination between metal oxide nanoparticles (Fe2O3 and NiO) and separators (PVA, KOH, HQ and GP/PPY). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Solid State Electrochemistry Springer Journals

Realization and characterization of flexible supercapacitors based on doped graphene electrodes

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References (25)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
1432-8488
eISSN
1433-0768
DOI
10.1007/s10008-022-05241-8
Publisher site
See Article on Publisher Site

Abstract

High energy consumption leads to the development of various energy types. As a result, the storage of these different types of energy becomes a key issue. Supercapacitors, as one important energy storage device, have gained much attention especially on electrode materials. The aim of this work is the realization of a flexible supercapacitor using graphene-doped metal oxides graphene/polypyrrole (GP/PPY) nanocomposites as electrodes. Exfoliation and in situ polymerisation are used for graphene and polypyrrole preparation. Metal oxide nanoparticles (Fe2O3 and NiO) are synthesised via green synthesis technique that based on olive leaves’ extract. Gel polymer (polyvinyl alcohol (PVA)—potassium hydroxide (KOH)—hydroquinone (HQ)) is used as an electrolyte and separator. The structural and morphological properties of these components are characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and scanning electron microscopy (SEM). Electrochemical tests are used to study the effect of the nanooxide particles and the different components of the electrolyte and the separator on the supercapacitor behavior. These tests show a stable supercapacitor for more than 50,000 cycles and different values of the specific capacity are obtained as a function of the combination between metal oxide nanoparticles (Fe2O3 and NiO) and separators (PVA, KOH, HQ and GP/PPY).

Journal

Journal of Solid State ElectrochemistrySpringer Journals

Published: Nov 1, 2022

Keywords: Graphene; Polypyrrole; Nanooxides; Hydroquinone; Flexible supercapacitor; Green synthesis

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