Abstract
Binary and ternary composites of polyaniline /carbon fiber (PAni/CF) and polyaniline/carbon nanotube/carbon fiber (PAni/CNT/CF are presented. PAni deposits were optimized in both electrodes considering different deposition times. The electrodes morphologies were observed by scanning electron microscopy. The devices were characterized by cyclic voltammetry, charge/discharge response at different current densities and electrochemical impedance spectroscopy. The cycle life was evaluated for both devices as their capacitive performances and demonstrated to be very stable in the range of 3,200 cycles studied. The electrochemical capacitors formed by PAni/CF and PAni/CNT/CF composite electrodes showed high specific capacitance values, potentially viable for application in supercapacitors.
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