Supercapacitor is the portable electronical technology that has emerged with the potential to enable greater energy densities than the conventional capacitors and greater power densities than that of batteries. To date, the development of high-performance anode electrodes remains a significant research direction. The present investigation deals with synthesis of iron molybdate [Fe₂(MoO₄)₃] nanoparticles and their nanocomposites with carbaneous material such as rGO via hydrothermal method by using PEG-6000 as a surfactant material. The crystalline structure, vibrational nature, optical properties, morphology and composition of the elements were studied using XRD, FTIR, Raman, UV-Visible spectrograph, and SEM with EDAX.  X-ray diffraction pattern confirmed the monoclinic crystal structure of Fe₂(MoO₄)₃ nanoparticles and their nanocomposites. the vibrational modes and orderness-disorderness in the synthesized carbaneous composite materials were found by Raman analysis. The scanning electron microscope (SEM) images of (Fe₂(MoO₄)₃/PEG/rGO nanocomposites revealed the nanorod morphology. Moreover, the electrochemical performance of the synthesized electrodes was analyzed using the parameters as Cyclic Voltammetry (CV), Galvanostatic charge-discharge (GCD) and electrochemical impendence spectroscopy (EIS). From the results, the Fe₂(MoO₄)₃/PEG/rGO nanocomposites electrode is found as an efficient electrode material with maximum specific capacitance value of 486.6 F/g with the scan rate 10 mV/s and obtained notable cyclic retention value over 5000 cycles at the current density 10 A/g in GCD analysis. Hence, this work focuses on the overview of the synthesis, characterization and electrochemical performance over three electrode system configurations of Fe₂(MoO₄)₃ and their nanocomposites for Supercapacitor application.

Keywords: Fe₂(MoO₄)₃ Nanorods, Electrode material.