Improved supercapacitive performances of zirconia after incorporation with polythiophene

In the present study, we have demonstrated the synthesis of zirconia (ZrO 2 ) and polythiophene (PTh)-based nanocomposite (ZrO 2 /PTh) for supercapacitors (SCs). The synthetic method was found to be efficient and low-cost. The ZrO 2 /PTh was characterised using different analytical techniques. The electrochemical investigations have been conducted using cyclic voltammetry, galvanostatic charge–discharge, and electrochemical impedance spectroscopy, respectively. The maximum specific capacitance of ZrO 2 /PTh was found to be 341.3 F/g under a three-electrode system. Cyclic stabilities of ZrO 2 /PTh have been evaluated to be 88.6% and 81.7% after 5000 cycles under three and two electrode systems, respectively. The power densities of ZrO 2 /PTh were found to be 1830.4, 1659.6, 1000.8, 750, 667.2, and 333.3 W/kg at energy densities of 0.3, 0.4, 0.6, 0.7, 1.2, and 1.9 Wh/kg, respectively.