Fabrication of Co3(PO4)2@Mn₃(PO4)2@Ni3(PO4)2 electrodes optimized using Vitex doniana leaf extract for supercapacitor application.

Autor: Obodo, Raphael M., Nsude, Hope E., Ezike, Sabastine C., Anosike, Joseph N., Eze, Chimezie U., Duru, Miletus O., Elejere, Ugochukwu C., Usman, Muhammad, Ahmad, Ishaq, Maaza, M.
Zdroj: Ionics; Aug2024, Vol. 30 Issue 8, p4951-4965, 15p
Abstrakt: This very study presented an innovative Co3(PO4)2@Mn₃(PO4)2@Ni3(PO4)2 enhanced using Vitex doniana leaf extract for supercapacitor electrodes application fabricated through chemical bath deposition method to achieve distinct crystalline phases and unique spherical-like and flaky-like structures integrated into nickel (Ni) foam substrate. The synergistic effect between Co3O4, MnO2, and NiO enhances the general superficial area, porosity, and conductivity of the fabricated electrodes toward improving the overall supercapacitor performance. The comprehensive electrochemical analysis performed confirmed the electrode's excellent properties engaging cyclic voltammetry (CV) and galvanostatic charge–discharge (GCD), indicating elevated specific capacitance, an enhanced rate capability, and elongated stability, using potassium hydroxide (KOH) engaged as the electrolyte during the study. The incorporation of Vitex doniana leaf extract additionally heightened the performances, demonstrating huge prospects for an innovative energy storage application. The fabricated supercapacitor electrodes exhibited outstanding energy and power densities, making them promising candidates for practical applications in supercapacitor devices. A broad analysis of the electrochemical impedance spectroscopy (EIS) presented an understanding of charge transfer rates and the effects of using Vitex doniana leaf extract. This work contributed to the understanding of the synergistic effects of composites of transition metallic oxides and leaf extracts on advancing the high performance of supercapacitors. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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