New synthesized ionic liquid functionalized graphene oxide: Synthesis, characterization and its nanocomposite with conjugated polymer as effective electrode materials in an energy storage device

Farshad Boorboor Ajdari, Elaheh Kowsari, Ali Ehsani, Milan Schorowski, Ludwig-Maximilians-Universität LMU

Research output: Contribution to journalArticlepeer-review

Abstract

In this work, we synthesized amine functionalized graphene oxide called FGO-235 and FGO-178 by a chemical route. The prepared functionalized graphene oxide (FGOs) were characterized by different analytical methods including FT-IR, Raman spectroscopy, Thermal gravimetry (TG), Field-emission scanning electron microscopy (FE-SEM), X-Ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). To improve the electrochemical properties of the poly ortho aminophenol (POAP), we prepared FGO-235/POAP and FGO-178/POAP films through electro-polymerization of POAP in the presence of synthesized FGO-178 and FGO-235 with a porous structure, serving as the active electrode for electrochemical supercapacitor. With regards to electrochemical methods, galvanostatic charge–discharge experiments, cyclic voltammetry (CV), and electrochemical impedance spectroscopy were performed in order to investigate the performance of the system. The specific charges of 820 and 348 C g−1 were obtained for FGO-235/POAP and FGO-178/POAP, respectively. This work introduced one of the most efficient materials for electrochemical redox capacitors which enjoyed easy synthesis, high active surface area, and stability in an aqueous electrolyte. © 2018 Elsevier Ltd
Original languageEnglish
Pages (from-to)789-804
Number of pages16
JournalElectrochimica Acta
Volume292
DOIs
Publication statusPublished - 2018

Keywords

  • Conjugated polymers
  • Cyclic voltammetry
  • Electric discharges
  • Electrochemical electrodes
  • Electrochemical impedance spectroscopy
  • Electrolytes
  • Enamels
  • Field emission microscopes
  • Graphene devices
  • Ionic liquids
  • Scanning electron microscopy
  • Supercapacitor
  • X ray photoelectron spectroscopy
  • ELectrochemical methods
  • Electrochemical redox
  • Electrochemical supercapacitor
  • Field emission scanning electron microscopy
  • Functionalized graphene
  • Galvanostatic charges
  • POAP
  • Poly-ortho-aminophenol
  • Graphene

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