Fabrication and Investigation of a MoS₂/Fe₃O₄/PANI Composite for Supercapacitor Applications

This study investigates a successful fabrication of MoS 2/ Fe 3 O 4 /PANI composite by chemical co‐precipitation method. The facile hydrothermal approach was employed to synthesize a MoS 2/ Fe 3 O 4 composite, followed by the utilization of a conventional chemical oxidation strategy to produce a PANI coating on the composite, thereby generating an active material for electrochemical reactions and a structure facilitating the transportation of ions via multiple pathways. The fabricated MoS 2/ Fe 3 O 4 /PANI composite was characterized by SEM, ICP, XRD, FT‐IR, and so on. In this study, we delved into the electrochemical charge storage feature of MoS 2/ Fe 3 O 4 /PANI. The electrochemical characteristics of the nanocomposite were assessed through the implementation of cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and chronopotentiometry techniques in a 3 M KOH electrolytic solution, utilizing nickel foam as both a material support and current collector for two electrode configurations. The findings indicate that MoS 2 , as the support matrix, possesses notable attributes such as a substantial surface area, elevated electrical conductivity, and varied oxidation states. As a result, the electrical conductivity performance of the MoS 2/ Fe 3 O 4 /PANI composite, which includes well‐dispersed Fe 3 O 4 nano‐cubes on the surfaces of MoS 2 , is significantly enhanced. In comparison to pure Fe 3 O 4 , the resultant composite revealed improved specific capacitances of 401 F/g at 1.25 A g −1 , along with outstanding cyclic stability of 89.3 even after undergoing 5000 cycles. The superior electrochemical properties observed may be ascribed to both the proficient electrical conductivity of MoS 2 and the incorporation of Fe 3 O 4 particles, which are anchored onto the MoS 2 . The results prove that MoS 2/ Fe 3 O 4 /PANI hybrid composite holds as highly efficient electrode material for supercapacitor.