Electrodeposition of Polyaniline Nanoparticles as High-Performance Electrode for Supercapacitor Application

Abstract

Conducting polymers are garnering significant attention as promising electrode materials for energy storage applications. In this study, we present a straightforward and binder-free method for the electrodeposition of polyaniline (PANI) films on steel substrates. By optimizing the deposition time, we successfully synthesized PANI nanoparticles, leading to distinct morphological and electrochemical properties. Comprehensive structural and physicochemical characterization revealed that the PANI15 thin films, prepared at an optimal deposition time, exhibited a remarkable specific capacitance of 632.56 F g-1 at a scan rate of 10 mV s-1 in a 1 M sulfuric acid (H₂SO₄) electrolyte. This study demonstrates a practical approach to the design and synthesis of advanced electrode materials, paving the way for enhanced performance in energy storage applications. Our findings underscore the potential of electrodeposited PANI films as efficient materials for supercapacitors and other energy- related technologies.