Enhanced capacitance of one-dimensional polypyrrole/graphene oxide nanoribbon nanocomposite as electrode material for high performance supercapacitors

[Display omitted] •PPy/GONR nanocomposites are synthesized using in situ chemical polymerization.•The notable specific capacitance of 747Fg−1 at scan rate of 5mVs−1 is obtained.•Excellent cyclic stability of PPy/GONR nanocomposites is achieved. High-performance polypyrrole/graphene oxide nanoribbon...

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Bibliographic Details
Published in:Synthetic metals 2014-12, Vol.198, p.188-195
Main Authors: Hsu, Feng-Hao, Wu, Tzong-Ming
Format: Article
Language:English
Subjects:
Applied sciences
Capacitance
Capacitors. Resistors. Filters
Composites
Electrical engineering. Electrical power engineering
Electrochemical properties
Exact sciences and technology
Forms of application and semi-finished materials
Fourier transforms
Graphene
Graphene oxide nanoribbon
Infrared spectroscopy
Molecular structure
Nanostructure
Oxides
Polymer industry, paints, wood
Polypyrrole
Polypyrroles
Supercapacitors
Technology of polymers
Transmission electron microscopy
Various equipment and components
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Summary:[Display omitted] •PPy/GONR nanocomposites are synthesized using in situ chemical polymerization.•The notable specific capacitance of 747Fg−1 at scan rate of 5mVs−1 is obtained.•Excellent cyclic stability of PPy/GONR nanocomposites is achieved. High-performance polypyrrole/graphene oxide nanoribbon (PPy/GONR) nanocomposites are synthesized via in situ chemical oxidation polymerization of pyrrole in the presence of GONR and cetyltrimethylammonium bromide. The molecular structure and morphology of the fabricated nanocomposites are characterized by Fourier transform infrared spectroscopy (FTIR), field-emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). The FESEM and TEM images show a one-dimensional structure for the PPy/GONR nanocomposites. The FTIR spectra of the nanocomposites demonstrate π–π interaction between the PPy backbone and GONR. The electrochemical properties are analyzed by cyclic voltammetry, which reveals that the highest specific capacitance of 747Fg−1 is obtained at a scan rate of 5mVs−1. The cyclic stability of these nanocomposites is enhanced and the initial specific capacitance decays by only 12% after 1000 cycles. Galvanostatic charge/discharge and electrochemical impedance spectroscopy results for the PPy/GONR nanocomposites are also discussed.
ISSN:0379-6779
1879-3290
DOI:10.1016/j.synthmet.2014.10.016