Interface engineering for enhancing the performance of novel sodium-doped MoS₂ nanocomposite: Synthesis and characterization functioning as a high-performance supercapacitor

Novel structured Na-doped MoS₂ nanosheets were developed in situ on Ni foam through a more accessible two-step hydrothermal technique. Benefiting from the synergistic reactions of the superior capacitance of Na-doped MoS₂ nanosheet, the superior electrical kinetics of Na-doped, and the porous nanostructure of the composites, the designed Na-doped MoS₂ nanosheet composites electrode achieves notable electrochemical activity. The material’s structural properties investigate using an X-ray photoelectron spectroscope analyzer, X-ray powder diffractions, scanning electron microscope, and transmission electron microscope. The electrochemical activity of the designed electrodes was executed using cyclic voltammograms, galvanostatic charge/discharges, and electrochemical impedance spectroscopy. Compared to the pure MoS₂ electrode, the novel architecture Na-doped MoS₂ nanosheet deremonstrates a higher specific capacity of 374.3 C g⁻¹ at 1 A g⁻¹. In addition, it achieves notable cycling stability performance and retains 87.4% capacity over 5,000 long cycles at 3 A g⁻¹. These notable results reveal that the uniquely designed Na-doped MoS₂ nanosheet displays superior electrochemical consequences and higher potential as nanomaterials for supercapacitors.