Fabrication and characterization of Sb₂O₃–MoS₂ nanocomposites for high performance supercapacitor applications

Abstract

Binary nanocomposite-based electrodes have been studied extensively in recent times owing to their multiple oxidation states, excellent physico-chemical features, and combined morphology, which are suitable for increasing the electrochemical performance of supercapacitors. The present work deals with Sb2O3-MoS2 NCs electrode for supercapacitor applications. The XRD, Raman, SEM, EDX, HRTEM, SAED and XPS characterizations have been studied to analyze the phase formation, vibrational modes, morphology, elemental composition and binding energies of the prepared Sb2O3-MoS2 NCs electrode material, as well as their electrochemical measurements such as CV, GCD, and EIS have been analyzed. The developed Sb2O3-MoS2 NCs electrode provides a high specific capacitance of 454.3 F/g at the current density of 1 A/g. Further, the hybrid supercapacitor device has been constructed which shows 104.04 F/g of specific capacitance at 2 A/g and manifests a good energy density of 24.42 Wh/kg at a power density of 1299.89 W/kg. Additionally, the hybrid device Sb2O3-MoS2//AC exhibits a good capacitive retention of 90.6% and a coulombic efficiency of 100.45% at 10 A/g over 8000 cycles.