One-pot synthesis of reduced graphene oxide-based PANI/MnO₂ ternary nanostructure for high-efficiency supercapacitor applications

Energy shortage imposes major global issues, and developing new energy storage devices has become extremely urgent. Because supercapacitors (SCs) have been regarded as inspirational energy storage technologies. Herein, a novel rGO/PANI/MnO₂ material was developed via a chemical reduction method for high-rate supercapacitors. The morphological structural & textural properties of fabricated nanostructure been investigated with X-ray diffraction, scanning electron microscope (SEM) & Brunauer–Emmett–Teller (BET). Electrochemical characterization of advanced nanocomposite contains specific capacitance (C_sp) of 1613.7 F g⁻¹ with enhanced rate capabilities and cycling stability retention of 99.7% with original capacity after 2000 cycles in 2 M KOH. Excellent efficiency of fabricated material is attributed due to small crystallite size, good morphology, and enhanced electrochemical surface area. This study emphasizes the good electrochemical performance of rGO/PANI/MnO₂ on carbon fiber. The flake like morphology of the composite provides numerous electronic conduction routes, and more active sites refer it to be potential candidate for energy storage devices.