Over the past few decades, as the world's energy use has increased, high-performance energy storagedevices that can replace fossil fuels, such as lithiumion batteries and supercapacitors, have been a majorfocus. Supercapacitors have attracted attention due to their long lifetime, high power density, and fastcharging and discharging than that of lithium ion batteries. In this paper, a self-grown coppersulfide@copper oxide (CuS@Cu2O) positrode obtained by a hydrothermal followed 300 °C for 2 h airannealing method from copper-foam (Cu-F) are envisaged as supercapattery electrode material in 0.1KOH electrolyte solution where, a remarkable capacity of 145, 134, 125, and 112 mA h g−1 at currentdensities of 1, 2, 3 and 4 A g−1, respectively, with about 80 % retention ability after 2000 redox cycles,are obtained. The electrochemical performance obtained for self-grown CuS@Cu2O positrode are betterthan those reported previously for self-gown CuS, Cu(OH)2 and CuO etc., electrode materials. An asymmetric supercapattery device assembly of CuS@Cu2O as a positrode with Bi2O3 as negatrode i.e.,CuS@Cu2O//Bi2O3 demonstrates energy density of 52 Wh kg−1 at power density of 750 W kg−1 at 0.5Ag-1 which, on connecting in series with another similar device, lighten a LED with its full-bright intensity,confirming a commercial potential of designed electrochemical supercapattery device.