For advanced supercapacitor applications, this work presents the synthesis of an electrochemical investigations of nickel and bismuth molybdate blended with multi-walled carbon nanotubes (MWCNTs). We have adopted simple sol-gel procedure for synthesis of nanostructures. Structural, textural and morphological analysis indicates the presence of high purity and advantageous porous morphology. The electrochemical analysis of both samples shows the specific capacitance of 728 Fg− 1 for Nickel Molybdate with Carbon Nanotubes (NM@CNT) and 542 Fg− 1 for Bismuth Molybdate with Carbon Nanotubes (BM@CNT) nanocomposites. NM@CNT stood out for its better energy density and power density as a full cell (26.5 Whkg⁻¹ at 2517 Wkg⁻¹). By facilitating improved ionic transport, electrochemical kinetics, and charge retention, metal molybdates and MWCNTs work in concert to position NM@CNT for energy-focused devices and BM@CNT for power-intensive supercapacitor applications.