Abstract
Composite electrodes for supercapacitors were prepared by electropolymerization of polyaniline (PANI) on the surface of activated-porous carbons. The surface morphology and the chemical composition of composite electrodes were characterized by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The electrochemical properties of electrodes and the capacitive behavior of the resulting capacitors were systematically studied using cyclic voltammetry (CV), ac impedance and constant current charge-discharge tests. The specific capacitance of PANI-carbon composite electrode was exhibited as high as 160F/g, in comparison with a value of 95F/g for the bare-carbon (BC) electrode. An increase in capacitance more than 60% has been achieved, that identifies the significant contribution of pseudocapacitance from PANI on the overall capacitance.
Original language | English |
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Pages (from-to) | 273-282 |
Number of pages | 10 |
Journal | Journal of Power Sources |
Volume | 117 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 2003 May 15 |
All Science Journal Classification (ASJC) codes
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering