The developments in electrochemical capacitors have led to the development of novel and inexpensive electroactive materials due to the notable improvement in performance for smart electronic device applications. Through coprecipitation and postcalcination processes, we synthesized nanostructured Ni and Ni doped‐reduced graphene oxide (Ni‐doped rGO) nanoparticles. The synthesized materials were subjected to standard characterization procedures to verify their morphological and structural details. Ni doping, which alters the structure and morphology of produced materials, enhances charge propagation and ion diffusion, according to tests made via cyclic voltammetry. With a specific capacitance of up to 634.7 F/g for 25 wt% Ni‐doped rGO at 10 mV/s, the produced materials exhibit exceptional performance as supercapacitor electrode materials, far exceeding the 365.2 F/g of the undoped rGO. Additionally, the 25 wt% Ni‐doped rGO nanosheets exhibited energy and power density values of 14.104 Wh/kg and 417.418 W/kg, respectively were recorded for the optimum sample. Therefore, the Ni‐doped rGO that has been prepared here is thought to be a promising, inexpensive material for energy storage applications. The method used to produce Ni‐doped rGO nanosheets in large quantities is both economical and environmentally friendly, and it also creates opportunities to process waste materials for a variety of applications.
Yigzaw et al. (Thu,) studied this question.