Hydrothermal fabrication of CuSm₂O₄/PANI nanohybrid electrodes for supercapacitor applications

Researchers are continuously seeking more rapid and effective energy storing methods to resolve the rapid increase in the energy crisis. Supercapacitors and other energy-storing technologies are currently in considerable demand to meet these energy concerns. Recently, spinel materials have drawn growing interest as promising substrates for electrochemical energy storage. In this work, CuSm₂O₄/PANI nanocomposite for supercapacitors was fabricated using the hydrothermal process. Several analytical techniques have been used to thoroughly evaluate the physical structure and electrochemical activity of the nanocomposite. The CuSm₂O₄/PANI nanocomposite demonstrated exceptional stability and capacitive performance, and the electrode manifested specific capacitance (C_s) of 1359.36 F/g at 1 A/g. Additionally, CuSm₂O₄/PANI nanocomposite showed coulombic efficiency of 85.43%, power density of 295 W/kg, and possessed energy density of 64.83 Wh/kg at 1 A/g. CuSm₂O₄/PANI has better electrochemical efficiency than CuSm₂O₄ due to its favorable expanded surface area, decreased resistance, and quicker electrolyte ion diffusion. Therefore, CuSm₂O₄/PANI is a suitable electrode substrate for supercapacitor applications and alternative energy storage technologies.