Nickel and Cadmium‐Doped Cobalt Oxide Coated on MoS 2 for High‐Performance Supercapacitors

The rapid growth in demand for advanced energy storage systems necessitates the development of high‐performance, cost‐effective electrode materials for next‐generation supercapacitors. In this work, the electrode based on Ni, Cd@Co 3 O 4 nanocomposite was prepared by the hydrothermal method and coated with molybdenum disulfide, and the final nanocomposite was investigated as an electrode material in supercapacitors. In order to check the morphology and prove the synthesized composition, various analyses such as field emission scanning electron microscope, X‐ray diffraction spectroscopy, Fourier transform infrared spectrometer, and elemental analysis, energy dispersive X‐ray spectroscopy were used. Also, the electrochemical properties of the synthesized compound were investigated by cyclic voltammetry, charge and discharge (CD), and electrochemical impedance spectroscopy tests. Based on the results of this research, the electrode prepared from the final nanocomposite (Ni, Cd@Co 3 O 4 /MoS 2 ) at the density of 1 A.g −1 , with a high capacitance of 785 F.g −1 , and after 2000 CD cycles maintained its stability of 90.6%. In this work, an attempt has been made to provide a cost‐effective and simple method for making supercapacitors with high electrochemical performance.