Synthesis and characterization of graphene/polythiophene (GR/PT) nanocomposites: Evaluation as high-performance supercapacitor electrodes

J. P. Melo, E. N. Schulz, C. Morales-Verdejo, S. L. Horswell, M. B. Camarada*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)
158 Downloads (Pure)

Abstract

Composites of polythiophene (PT) and graphene (GR) with different mass proportions were studied for their application as supercapacitors. Fourier transform infrared spectroscopy (FTIR) along with High Resolution Scanning electron microscopy (HR-SEM) were employed in order to characterize the morphology and composition of the resulting composites. The electrochemical behaviour of these composites was studied by means of cyclic voltammetry and specific capacitance curves were derived from these measurements. The Faradaic impedance spectroscopy response of the different composites, along with that of GR, was also studied. From these measurements it was found that a 1:1 in mass composite of GR and PT showed a higher specific capacitance, even when compared with GR alone. The introduction of the GR in that proportion also showed an enhanced cyclic stability in comparison with the sole polymer. The high specific capacitance (365 F g-1 at 1 A g-1) of this composite material indicates its potential for use as an electrode material for supercapacitors.

Original languageEnglish
Pages (from-to)2933-2948
Number of pages16
JournalInternational Journal of Electrochemical Science
Volume12
Issue number4
Early online date12 Mar 2017
DOIs
Publication statusPublished - 1 Apr 2017

Keywords

  • Graphene
  • Nanocomposites
  • Polythiophene
  • Supercapacitors

ASJC Scopus subject areas

  • Electrochemistry

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