Journal
ENERGY
Volume 78, Issue -, Pages 298-303Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2014.10.011
Keywords
Activated multi-walled carbon nanotubes; Supercapacitors; Polyaniline; Nanocomposites
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Funding
- Carbon Valley Project by Ministry of Trade, Industry and Energy, Korea
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Chemically A-MWCNT (activated multiwalled carbon nanotube)/PANI (polyaniline) composites produced via ultrasonic polymerization of an aniline monomer in the presence of A-MWCNTs were investigated as potential electrode materials for supercapacitors. These composites were compared to pristine MWCNTs and MWCNT/PANI composites. The influence of the pore structure, which developed because of the polymerization process, was investigated by measuring N-2 adsorption/desorption isotherms at 77 K. The electrochemical properties of the materials were determined by cyclic voltammetry and galvanostatic charge discharge cycling measurements in 1 M NaNO3 electrolyte solution, using a three-electrode system at room temperature. The results suggested that the pore structure of the A-MWCNTs could effectively promote the homogenous-dispersion of aniline and consequently result in excellent cycling performance. Furthermore, interaction between the pi-conjugated structure of carbon and the quinoid ring of the PANI matrix can lead to enhancement in the charge transfer process. (C) 2014 Elsevier Ltd. All rights reserved.
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