Asymmetric supercapacitors (ASCs) constructed from metal oxide–metal sulfide–carbon composites have been identified as high-performance energy storage devices due to their ability to combine fast redox kinetics with excellent electrical conductivity and structural stability. In the present study, a ternary MnFe2O4/MoS2@MWCNT composite was synthesized via a hydrothermal-ultrasonication route and employed as the positive electrode material. The MnFe2O4 spinel oxide contributes rich redox activity, MoS2 offers layered architecture for enhanced ion diffusion, and MWCNTs act as a conductive matrix that improves electron transport and mechanical integrity. Activated carbon (AC), with its enhanced surface area and porosity, was employed as the anode. The resulting ASC cell delivered a high energy density of 47.5 Wh kg⁻1 at a power density of 750 W kg⁻1 and demonstrated stable performance over extended cycles stability with maintaining 95.9% capacitance after 10,000 cycles. This study highlights the potential of designing hybrid electrode systems by integrating transition metal oxides, sulfides and carbonaceous materials for next-generation supercapacitor applications.