Comparative study of supercapacitive behaviour of vanadium oxide nanoflakes deposited hydrothermally on stainless steel mesh

Vanadium oxides are anticipated to be high-performance energy storage electrodes due to their connected double layer and pseudo-capacitive charge storage mechanism. In the current work, flexible stainless-steel mesh substrates are created using a straightforward hydrothermal approach resulting net-like linked nanoflakes and microflowers. There are more electrochemically active sites for energy storage due to its large surface area. Stainless-steel mesh substrates themselves provide porous structure for charge transfer. Morphological results of SEM show porous nanoflake-like structures grown on the substrate. Phase is confirmed using XRD studies. It shows the specific capacitance of 675.66 F g⁻¹ and 343.33 Wh g⁻¹ of energy density at 0.002 A g⁻¹ current density and power density of 19,000 W g⁻¹.