SrSnO3/rGO/PANI ternary nanohybrid for asymmetric supercapacitor and its electrochemical performance

New material development opens the door for improving the characteristics of materials for their supercapacitor applications. This study uses a simple polymerization approach to synthesize a new SrSnO₃/rGO/PANI nanohybrid. The synthesized novel SrSnO₃/rGO/PANI nanohybrid was validated by spectroscopic techniques such as XRD, Raman, XPS, FEG–SEM, TEM, and BET measurements. To assess the electrochemical properties of the generated samples, several electrochemical methods are used, such as Electrochemical Impedance Spectroscopy (EIS), Galvanostatic Charge–Discharge (GCD), and Cyclic Voltammetry (CV). The resultant SrSnO₃/rGO/PANI Nanocomposite (NC) demonstrates remarkable energy storage characteristics with an enhanced specific capacitance (C_s) of 1003.26 F/g and specific capacity (C_sp) value of 239.67 mAh/g at a current density of 1 A/g on three–electrode testing. Additionally, SrSnO₃/rGO/PANI//AC ASC device demonstrated C_s of 237.67 F/g at 1 A/g current density using two–electrode measurements. Moreover, the composite exhibits exceptional cyclic stability, holding onto 81.41 % of its initial capacitance, and showed 90.73 % coulombic retention even after 10,000 cycles. In the end, the ASC device delivered a high power density of 895.02 W/kg at 1 A/g and a high energy density of 106.95 Wh/kg. According to the results, SrSnO₃/rGO/PANI NC serves as an effective electrode material for applications involving energy storage.