Efficient Synthesis and Electrochemical Investigation of Co3O4:PdO/Pd Nanocomposite for High-Performance Supercapacitor Electrode Material

Advancements in the metal oxides-based electrode material for the fabrication of supercapacitors have been an important focus of research in recent times. The electrochemical properties of electrode materials play a vital role in the excellent performance of the supercapacitor. In this regard, the doping of Co3O4 nanoparticles (NPs) with PdO/Pd using the ecofriendly extracted foliar reducing and stabilizing agent from Euphorbia cognata is analyzed. The as-synthesized Co3O4:PdO/Pd nanocomposite exhibits a multifaceted phase composition, characterized by a particle size of 22 nm and a bandgap energy of 2.28 eV. Remarkably, an obvious reduction in bandgap energy is observed, indicative of the heightened electrochemical performance of the Co3O4:PdO/Pd nanocomposite. Galvanostatic charge-discharge techniques elucidate impressive electrochemical properties, including a 202 F g(-1) specific capacitance and an exceptionally small resistance value of 1.04 & omega;. These findings not only infer efficient charge particle diffusion, but also signify an enhanced charge storage capacity. Thus, the outcomes of this study state the potential of functionalized foliar Co3O4:PdO/Pd nanocomposites as a promising choice for advanced electrode materials in supercapacitor applications. Importantly, this study highlights the significance of utilizing cost-effective and sustainable materials in the development of pioneering energy storage materials, contributing the advancement of materials field.