Capacitance Properties of Electrochemically Synthesised Polybithiophene-Graphene Exfoliated Composite Films

The graphene (GR) has attracted intensive interest due to its two-dimensional and unique physical properties. In the present study, the graphene sheets were synthesized by electrochemical exfoliation of graphite in sulfuric acid solution. The polybithiophene-graphene (PbTh-GR) composite films deposi...

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Bibliographic Details
Published inIranian journal of chemistry & chemical engineering Vol. 38; no. 3; pp. 201 - 210
Main Authors Abdelfetteh Sayah, Farid Habelhames, Ahmed Bahloul, Yasser Ghalmi
Format Journal Article
LanguageEnglish
Published Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR 01.05.2019
Subjects
chronoamperometry
composite film
graphene
polybithiophene
specific capacitance
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Summary:The graphene (GR) has attracted intensive interest due to its two-dimensional and unique physical properties. In the present study, the graphene sheets were synthesized by electrochemical exfoliation of graphite in sulfuric acid solution. The polybithiophene-graphene (PbTh-GR) composite films deposited onto indium tin oxide substrate (ITO/PbTh-GR) have been prepared by the incorporation of graphene sheets into the PbTh matrix during electropolymerization under magnetic stirring from the LiClO4/CH3CN electrolyte containing the bithiophene (bTh) monomer and graphene sheets. The incorporation of graphene sheets at different masses (1, 2 and 3 mg) is ensured by the effect of the stirring of the electrolyte. The characterisation of films is effected by electrochemical methods (cyclic voltammetry and impedance spectroscopy), spectroscopic technics (FT-IR, UV-Visible), X ray diffraction, thermogravimetric analysis, and scanning electron microscopy. It was observed that the electrochemical performance measurements of the ITO/PbTh-GR (3 mg) film show a specific capacity of around 65 F/g, which is six times higher than that of ITO/PbTh films, 11 F/g
ISSN:1021-9986
1021-9986