Designing highly efficient ternary composite electrode materials with novel nanostructures plays a crucial role in enlightening both the high energy density and structure stability of supercapacitors. In this connection, we synthesized MXenes (Ti3C2) adorned tungsten disulfide (WS2) and nickel cobalt phosphate (NCP) using a probe sonication process and facile hydrothermal method, respectively. The integration of WS2 quantum dots and NCP microflowers within the Ti3C2 layers (NCP-M-W) significantly enhances the electrocatalytic efficiency of the NCPM-W composite by eliminating the restacking issue, thereby making it a highly effective electrode for energy storage applications. Subsequently, the advantages of synthesizing the NCP-M-W with ternary metal formulation increase the layer-to-layer distance that allows the KOH electrolyte to penetrate the inner surface of the electrode. Due to the optimized inter-layer spacing, the NCP-M-W electrode achieved an impressive specific capacitance of 1020 F/g at a current density of 1 A/g. Interestingly, the fabricated NCP-M-W//AC asymmetric supercapacitor device (ASC) delivered outstanding energy and power densities of 38 Wh/kg and 703 W/kg at the 1 A/g current density owing to high specific surface area with more metal active sites and good conductivity. Whereas, the capacitance retention and coloumbic efficiency of the fabricated device are 73 % and 99.5 % for 15,000 cycles respectively. Hence, these results distinctly reveal that the prepared ternary electrode NCP-M-W can act as a proficient and reliable option as an electrode for high-performance supercapacitor applications.