Optimisation of a ternary composite of CuFe₂O₄/CuO@rGO and its electrochemical evaluation as an electrode material for supercapacitor applications

In this study, CuFe₂O₄/CuO@rGO nanocomposites were prepared using the hydrothermal technique. In order to investigate these nanocomposite electrochemical properties, researchers constructed two-electrode and three-electrode configurations. The nanocomposite CuFe₂O₄/CuO@rGO showed an impressive specific capacitance of 2110 F/g at 1 A/g. This asymmetric capacitor showed an impressive 40.44 Wh kg⁻¹ energy density at a power density of 780 Wkg⁻¹, with activated carbon (AC) as the negative electrode and CuFe₂O₄/CuO@ rGO as the positive electrode. It also had a prolonged cycle life, with 93% retention after 10,000 cycles. By illuminating light-emitting diode (LED) lights, the asymmetric cell demonstrated the practical use of this nanocomposite as an active electrode material. This device demonstrated its structural durability by maintaining a constant electrochemical activity. To our knowledge, the synthesised nanocomposite demonstrated superior performance. The impressive electrochemical capability of the produced nanocomposite makes it an attractive electrode for use in high-performance hybrid capacitors.