Abstract
The hybrid nanocomposite of Copper Ferrite/Carbon sphere (CuFe2O4/C-sphere NC) has been synthesized and their combined electrochemical activity for supercapacitors is achieved. XRD study reveals the average crystallite size of CuFe2O4/C-sphere NC as 112 nm. CuFe2O4/C-sphere NC provides a huge specific surface area of 532 m2/g. Cyclic voltammetry (CV) analysis exhibits the competitive specific capacity of CuFe2O4/C-sphere NC as 320 C/g at the sweep rate of 10 mV/s. The galvanostatic charge-discharge (GCD) study shows a good specific capacity of 264 C/g at 1 A/g and excellent cyclic stability of 82.4% for 5000 cycles. The CuFe2O4/C-sphere//AC solid-state hybrid supercapacitor provides a high specific capacity of 131 C/g along with remarkable energy density and power density of 40.9 Wh/kg and 11248 W/kg respectively.
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