Synthesis of Copper Cobalt Ferrite CuCoFe_2O_4 as Active Material for Conductive Cotton-Based Supercapacitors Aprilia Pramu Dhita (a*), Rike Yudianti (b), Iwan Sugihartono (a)
Abstract
A CuCoFe_2O_4-/polypyrrole (CCF/PPy) nanocomposite was synthesized via in-situ polymerization and evaluated as a pseudocapacitive electrode. CCF/PPy delivered a specific capacitance of 158 F/g at 0.1 A/g, a 41% increase over pristine CCF (112 F/g). Cyclic voltammetry revealed enhanced redox activity, and electrochemical impedance spectroscopy showed reduced internal resistance (2.1Ω- Vs 6.4Ω-) . Separately, conductive cotton substrates were fabricated using CNT-based inks (with nanocellulose or SDS) via immersion and drop-casting. Conductivity varied across eight samples (A1-A8), ranging from 0.03 to 0.47 S/cm. Sample A4, prepared with CNT/nanocellulose via drop-casting, achieved the highest conductivity (0.47 S/cm). The results highlight the synergistic contribution of polymer-ferrite nanocomposites and optimized textile substrates for high-performance flexible supercapacitors.
