The woollen-like structure of Copper Oxide (CuO) thin films has been synthesized via chemical method using aqueous ammonia as a complexing agent which is directly used as an electrode material for supercapacitor application. CuO electrode achieved maximum specific capacitance of 576 F/g, exhibited for 5 mV/s scan rate with the small Equivalent Series Resistance (ESR) value of 0.72 Ω. The highest energy density, power density and Coulomb efficiency of CuO electrode was observed having values of 19.65 Wh/kg, 916.66 W/kg and 82.01% respectively at current density of 1 mA/cm². CuO thin films are found to have monoclinic structure as confirmed from X-ray Diffraction (XRD). It is observed that as the deposition time enhances the crystallite size also increases, whereas micro-strain, dislocation density and distortion parameters decrease. The FESEM results confirmed woollen-like structure of CuO thin films. Surface wettability shows hydrophilic nature with the liquid interface. The EDS spectra confirmed the Cu and O elements present in the prepared samples. The BET analysis shows that the CuO thin film has high surface area of 39.58 m²/g with mesoporous characteristics. These results show that electrode will be a potential material in the supercapacitor applications besides it is cost-effective.