Enhanced supercapacitor performance of NiO/AC/Ag3PO4 nano composite material

This research explores supercapacitors made from activated carbon (AC) from areca nuts, Nickel oxide (NiO), and Silver phosphate (Ag₃PO₄). The study investigates the synthesis, characterization, and electrochemical performance of composite materials. The morphology, structural properties, and surface characteristics of the composite materials were verified by methods including X-ray diffraction (XRD), scanning electron microscopy (SEM), and surface area analysis. Electrochemical evaluations, including electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and galvanostatic charge–discharge (GCD), were conducted to assess the capacitive performance along with its antimicrobial properties. The results indicated that the NiO/AC/Ag₃PO₄ composite exhibited significantly improved specific capacitance, energy density, and cycling stability compared to activated carbon alone. The synergistic effects of NiO and Ag₃PO₄ contributed to enhanced charge storage capability and faster ion transport. The optimized composite demonstrated a specific capacitance of 579 F/g at a current density of 1 A/g. These results show that the NiO/AC/Ag₃PO₄ improves the for supercapacitor application.