Abstract
Transitional bimetallic sulfides have garnered significant interest due to their versatile redox reactions, strong electrochemical activity, and cost-effectiveness. However, their low energy density and poor rate performance have hindered their use in energy storage systems. To overcome these challenges, we have developed a Co(2)O(3)@CoMo(2)S(4) core-shell structure using a strategic design approach, serving as a conductive framework for supercapacitors. The innovative Co(2)O(3)@CoMo(2)S(4) core-shell structure exhibits exceptional performance, achieving a specific capacitance of 4951.8 F g(-1) at 1 A g(-1) and retaining 90.85% cyclic stability after 5500 cycles, outperforming most reported transitional bimetallic sulfides. The Co(2)O(3)@CoMo(2)S(4)//AC supercapacitor achieves an energy density of 41.66 Wh kg(-1) and a power density of 0.35 kW kg(-1). Our research paves the way for the development of transitional bimetallic sulfides with core-shell structures that offer superior performance in supercapacitor applications, providing valuable insights for future advancements in the field.