Power density and energy density stand as two pivotal parameters within the realm of supercapacitors, profoundly influencing the assessment of their performance, and enabling effective comparisons among various supercapacitor models. In general, the amount of energy stored per unit weight of a device is defined as the specific energy density (E), and the specific power density (P) is a direct measurement of the rate at which energy can be transferred from the device. Both energy density (in Wh Kg -1 ) and power density (in W Kg -1 ) of a supercapacitor could be measured from the cyclic voltammetry curves and charge/discharge profiles using equations ( ) & .