The Influence of the Range of Electroactivity and Capacitance of Conducting Polymers on the Performance of Carbon Conducting Polymer Hybrid Supercapacitor

Abstract

Hybrid electrochemical supercapacitors based on carbon and conducting polymers as negative and positive electrodes, respectively, have been investigated. Poly-͑3-fluorinatedphenyl͒thiophene and poly͑ethylenedioxythiophene͒ derivatives showing various ranges of electrochemical activity and capacitance values were evaluated as positive electrodes. It was shown that the mass and capacitance of the polymers have a significant effect on the charge/discharge characteristics and performance of such hybrid electrochemical supercapacitors. The experimental conditions that should be used to obtain specific charge/discharge curves are presented. A linear charge/discharge curve can be obtained between 0 and 3 V when the weight of conducting polymer is larger than that of the negative carbon electrode. In contrast, a battery-like charge/discharge curve is recorded when a smaller conducting polymer weight, relative to that of the carbon electrode, is used.

A review of electrode materials for electrochemical supercapacitors

“…156 (2) Hybridizing ES. Since CPs in the n-doped state possess poorer stability than those in the p-doped state, 137,157 replacing an n-doped polymer at the negative electrode by a carbon electrode seemed feasible. 143,158,159 For example, a hybridized ES with a p-doped polythiophene derivative as the positive electrode and activated carbon as the negative electrode could maintain a good performance cyclability of over 10 000 cycles with a better performance than double-layer carbon-based ES in terms of power density.…”

Microwave assisted synthesis of MnO2 on nickel foam-graphene for electrochemical capacitor

“…Carbon materials such as activated carbon have been used as electrode material for supercapacitors. However, their poor electrochemical performance has limited them for practical applications [8]. Conducting polymers, transition metal oxide and different composite materials are all being considered as alternatives to carbonaceous materials with limited performance [9][10][11].…”

Supercapacitor studies of electrochemically deposited PEDOT on stainless steel substrate

“…Several thiophene derivatives were polymerized by oxidation of the respective monomers using a Fe 31 salt, the corresponding polymers were studied for capacitor characteristics. 9 In a nonaqueous electrolyte, a SC value of 103 F/g were reported. Electrochemical properties of composites prepared from PEDOT and multiwalled carbon nanotubes were investigated for supercapacitor application.…”