Investigating the synergistic potential of urchin-like CuCo2O4 flowers and BiVO4 sheets in supercapattery framework designs for effective energy storage applications

Abstract

Rational designed porous characteristics and morphology dependent metal oxide electrodes play an energetic impact for designing effective energy storage device. In this research, we reported the urchin-like positive 3D-CuCo2O4/NF electrode achieved the specific capacity of 535 C g−1 (1070 mF cm−2) with 93.4% of superb stability retention. Similarly, a sheet-like 2D-BiVO4/NF electrode demonstrated the capacitance of 703.8 F g−1 (1055 mF cm−2) with 83.4% cycling stability retention behaviour. Further this work, we demonstrated 3D-CuCo2O4//2D-BiVO4 based supercapattery framework designs for high-performing energy storage application. In this regard, the device achieved energy and power densities of 33.3 µ Wh cm−2 (26.6 Wh kg−1) and 6000 µ W cm−2 (4800 W kg−1) along with remarkable (86.9% at 10,000 cycles) cycling stability output performance. The tolerable electrochemical results of this device are mainly credited to the availability of porous architectures that could be provided electroactive spots during the ion transportation process. In addition, the concept of fabricated device will be promised to future electronic applications.