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

more »

... edoxcapacitor 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,