Polyindole (PI) has drawn considerable interest in supercapacitor applications that show great promise in portable and wearable devices. Herein, Polyindole was synthesized using a chemical oxidative polymerization approach using two approaches, with and without dopant p-TSA. The polyindole was synthesized using the chemical oxidative polymerization method and systematically investigated using characterization studies, including FTIR, XRD, and FESEM. Further, the electrochemical capacitive behavior was examined using various electrolytes, KCl, KOH, and H2SO4, at 0.5 M concentration. The cyclic voltammetry studies of the samples were carried out at a scan rate of 10 mV/s-100 mV/s, and a potential window of 0 to 0.6 V. Polyindole exhibits unique redox properties, electrochemical reactivity, and better current response in 0.5 M H2SO4. So, the electrochemical performance of Polyindole with higher mass loading was carried out using carbon cloth as a working electrode in 1 M H2SO4. It exhibits a maximum discharge time and a specific capacitance of 71 F/g at 1A/g current density