Geminal dicationic ionic liquid functionalized graphene nanoribbon/POAP composite film: synthesis, characterization and electrochemical pseudocapacitance performance

Herein, ionic liquid functionalized graphene nanoribbons (IL-GNR) were fabricated via geminal dicationic ionic liquid, acting as not only a reducing agent but also a functionalizing one. The analyses including scanning electron microscopy (SEM) and X-ray diffraction were employed to investigate the...

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Bibliographic Details
Published in:Ionics 2018-07, Vol.24 (7), p.2083-2092
Main Authors: Kowsari, E., Ehsani, A., Dashti Najafi, M., Seifvand, N., Heidari, A.A.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Conducting polymers
Electrochemical analysis
Electrochemical impedance spectroscopy
Electrochemistry
Energy Storage
Graphene
Ionic liquids
Ions
Nanoribbons
Optical and Electronic Materials
Original Paper
Polyaminophenol
Polymerization
Reducing agents
Renewable and Green Energy
Scanning electron microscopy
Synergistic effect
X-ray diffraction
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Summary:Herein, ionic liquid functionalized graphene nanoribbons (IL-GNR) were fabricated via geminal dicationic ionic liquid, acting as not only a reducing agent but also a functionalizing one. The analyses including scanning electron microscopy (SEM) and X-ray diffraction were employed to investigate the fabricated sample structures. Through the electropolymerization of ortho aminophenol monomers, carried out in the presence of IL-GNR, poly ortho aminophenol (POAP)/(IL-GNR) composite films, functioning as an active electrode in supercapacitor application, were prepared so that the electrochemical behavior of the conducting polymer could be enhanced. For investigation of the system behavior, various electrochemical techniques including cyclic voltammetry (CV) and galvanostatic charge-discharge method as well as electrochemical impedance spectroscopy (EIS) were utilized. Not only the superior active surface area and the composite film conductivity but also the synergistic effect existing between POAP and IL-GNR resulted in the supercapacitive performance of the fabricated composite film.
ISSN:0947-7047
1862-0760
DOI:10.1007/s11581-018-2459-9