<p>Researchers are now paying close attention to nanostructured metal vanadates because of their exceptional capabilities in energy conversion, electronic devices, catalysis and storage. The Mo₄V₆O₂₅ nanostructures was prepared via easy wet chemical method. The prepared Mo₄V₆O₂₅ was examined using a variety of analytical and spectral methods. Because of their abundance, relative affordability, and multiple oxidation states, molybdenum and vanadium may generate a wide range of redox reactions that are advantageous for electrochemical function. The developed Mo₄V₆O₂₅ nanostructures can also be utilized as efficient material for supercapacitors (SCs) because of their superior features and easy passage of ions. They demonstrated notable efficiency with significant specific capacity (C_s) of 203&#xa0;C/g at 1&#xa0;A/g. Additionally, it shows good cyclic stability and coulombic efficiency (89.5% and 83.5 even after 10,000 cycles at 1&#xa0;A/g). The nanoflakes-like structure of Mo₄V₆O₂₅ is the best option for use in SCs attributable to its significant high-rate capability as well as cycle stability. After assembling with activated carbon (AC) to form a Mo₄V₆O₂₅//AC device, the energy density (ED) of this Mo₄V₆O₂₅//AC device is 56.9 Wh/kg at a power density (PD) of 1125&#xa0;W/kg, and remains at a 15 Wh/kg at a power density of 4500&#xa0;W/kg. The findings suggest that Mo₄V₆O₂₅ nanostructures are excellent options for high-efficiency energy storage systems. </p>