Effect of polymerisation current density of electrodes on the performance of polypyrrole based redox-capacitor

Abstract

* Corresponding author ( ) economic solutions to the demand for power sources. Redoxcapacitors replace the role of batteries and conventional capacitors by hundred times of the power density and energy density. Research activities are being continued to fabricate more comprehensive supercapacitors. Among those, fabrication of the symmetric polymer capacitor is dominant because of its simplicity. In this study, the effect of polymerisation current density on the performance of a symmetric polymer redoxcapacitor is reported. Conducting polymer, polypyrrole (PPy) was used as the electrodes, while a gel polymer electrolyte as the electrolyte. Fabrication of the redox-capacitors was . They were characterised using cyclic voltammetry tests, continuous galvanostatic charge-discharge tests and electrochemical value of 12 Fg -1 could be obtained by cyclic voltammetry measurements. It was about 7 Fg -1 as per the galvanostatic stable upon continuous cycling. An increase was noticed in density. From the impedance spectroscopy measurements, it was observed that with increasing polymerisation current density, the capacitive nature of the redox-capacitors can be improved.Cyclic voltammetry, polypyrrole, redox-capacitor,

Capacitors Based on Polypyrrole Nanowire Electrodeposits

“…Additionally, to its morphology, the deposits show excellent adherence, as previously verified [26,28], increasing easy manipulation and durability, useful characteristics in energy storage devices. Finally, to evaluate the potentiality of the application of PPy-nw in the construction of supercapacitor devices Table 3 shows a summary of common parameters for capacitor characterization from other authors [33][34][35] with similar materials compared to those obtained in present work. Finally, to evaluate the potentiality of the application of PPy-nw in the construction of supercapacitor devices Table 3 shows a summary of common parameters for capacitor characterization from other authors [33][34][35] with similar materials compared to those obtained in present work.…”

“…Voltammetric profiles corresponding to the electrosynthesis of PPy in the absence and presence of a template are shown in Figure 1a, producing ITO electrodes modified with conventional PPy, PPy bulk, and nanostructured PPy, PPy-nw, respectively [22]. In Figure 1b, the shape of the p-doping/undoping profile presents a rectangular wave, indicating ideal capacitive behavior [33][34][35]. Then, the intensity of this p-doping/undoping process of PPy bulk and PPy-nw is compared.…”