Synthesis of Co3O4/NiO nanospherical composites as electrode material for high-performance supercapacitors
Department of Physics, College of Science, Jazan University, 45142, Jazan, Saudi Arabia
2 Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, 11671, Riyadh, Saudi Arabia
3 Department of Physics, College of Science, Taif University, P.O. Box 11099, 21944, Taif, Saudi Arabia
4 Department of Physics, Al-Qunfudah University College, Umm Al-Qura University, 24382, Mecca, Saudi Arabia
5 Division of Science and Technology, Department of Physics, University of Education Lahore, Lahore, Pakistan
6 Department of Physics, University of Agriculture, Faisalabad, Pakistan
Accepted: 18 April 2023
Published online: 6 May 2023
Nanospheres of Co3O4, NiO, and their composites (Co3O4/NiO) are prepared by the co-precipitation method and utilized as supercapacitor electrode materials. The material’s chemical composition was identified using EDX, and the crystallite sizes of Co3O4, NiO, and their nanocomposite determined using X-ray diffraction were obtained to be 25.36 nm, 21.80 nm, and 23.58 nm, respectively. FTIR was utilized to check the functional groups of the prepared material, and scanning electron microscopy revealed that there were many interconnected nanospheres with spherical morphology in Co3O4, NiO, and their nanocomposite. To investigate the electrochemical properties, cyclic voltammetry was utilized to find the specific capacitance of nanocomposites (Co3O4/NiO), which was 2769.2 F/g at 5 mV/s, and galvanostatic charging/discharging was utilized to measure the excellent power density of 3629.76 W/kg at current density 7 A/g and the excellent energy density of 131.96 Wh/kg at 1 A/g current density of the nanocomposite Co3O4/NiO. In comparison with the studies, all of these findings are exceptional and may yield useful results for the production of high energy density supercapacitors.
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