A B S T R A C T The beneficial feature of the polymeric framework in a gel electrolyte is to assist ion transport via the segmental motion of the polymer chains. This feature was displayed by ac impedance analysis on an activated carbon capacitor assembled with a gel electrolyte, which consisted of poly(ethylene oxide)-copoly(propylene oxide) as a host, propylene carbonate (PC) as a plastici…
Abstract Electrodes for supercapacitors were fabricated by depositing polyaniline (PANI) on high surface area carbons. The chemical composition of the PANI-deposited carbon electrode was determined by X-ray photoelectron spectroscopy (XPS). Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were used to investigate the electrochemical properties of electrodes. An equivale…
Abstract Capacitance and conductivity enhancements of activated carbon fabric employed as electrodes of electrochemical capacitors (ECs) were achieved by electrochemical deposition of conducting poly(o-toluidine) (POT). Potentiodynamic polymerization of o-toluidine onto the carbon in H2SO4 was employed for this carbon modification. The capacitance of the activated carbon was enhanced by superi…