<p>Conductive nanocomposites of polypyrrole (PPy) with various nanostructures were synthesized through in situ polymerization of pyrrole, incorporating Fe₃O₄ nanoparticles and carbon nanotubes (CNTs) as nanofillers. This unique combination leverages the high conductivity of CNTs, the redox activity of Fe₃O₄, and the electrochemical versatility of PPy to overcome the limitations of conventional electrode materials. Field-emission scanning electron microscopy (FE-SEM) confirmed the uniform deposition of PPy on the nanofillers, forming a well-connected, porous network ideal for ion transport and charge storage. Electrochemical characterization via galvanostatic charge–discharge (GCD) revealed a significant enhancement in performance, with the optimized nanocomposite (containing 9% CNTs and 25% Fe₃O₄) achieving an outstanding specific capacitance of 514.36 F/g at 1 A/g. The electrode retained 81% of its capacitance after 3000 cycles, demonstrating excellent long-term stability. These results underscore the novelty and effectiveness of our ternary nanocomposite design, offering a significant candidate for next-generation supercapacitors. This work not only advances the conductive polymer-based energy storage field but also opens new avenues for multifunctional nanocomposite development in broader electrochemical applications.</p> Graphical abstract <p></p>