ZnFe 2O₄ nanorods encapsulated in reduced graphene oxide sheets as advanced electrodes for supercapacitor applications

Binary transition metal oxides (BTMOs) could be used in supercapacitors because they are active and have a big theoretical capacity. Here, we investigate a zinc-and-iron BTMO in its pure and hybrid forms, i.e., as ZnFe₂O₄ nanorods and as ZnFe₂O₄ nanorods on reduced graphene oxide (rGO). After the chemicals were made, they were explored using a variety of analytical methods. Electrochemical analysis was employed to study how well the nanoengineered goods worked as supercapacitor electrodes. The galvanostatic charge-discharge, cyclic voltammetry and electrochemical impedance spectroscopy results showed that the electrodes produced have a huge amount of promise for use in super- capacitors. The specific capacitance of ZnFe₂O₄@rGO was found to be 1720 F g^-1 with cyclic stability of 93% after 5000 cycles. Electrochemical studies showed that adding rGO increased the electrodes' specific conductance and improved the discharge time and cycle stability. This is due to lot of surface area and carried electricity well. The higher capacitance of the ZnFe₂O₄ @rGO electrode shows excellent capacitive behaviour. So, this molecule could be a good way for energy storage applications. (author)