Supercapacitors are widely used in many fields owing to their advantages, such as high power, good cycle performance, and fast charging speed. Among the many metal-oxide cathode materials reported for supercapacitors, NiMoO₄ is currently the most promising electrode material for high-specific-energy supercapacitors. We have employed a rational design approach to create a nanorod-like NiMoO₄ structure, which serves as a conductive scaffold for supercapacitors; the straightforward layout has led to outstanding results, with nanorod-shaped NiMoO₄ exhibiting a remarkable capacity of 424.8 F g^-1 at 1 A g^-1 and an impressive stability of 80.2% capacity preservation even after 3500 cycles, which surpasses those of the majority of previously reported NiMoO₄ materials. NiMoO₄//AC supercapacitors demonstrate a remarkable energy density of 46.31 W h kg^-1 and a power density of 0.75 kW kg^-1. This synthesis strategy provides a facile method for the fabrication of bimetallic oxide materials for high-performance supercapacitors.

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 Co₂O₃@CoMo₂S₄ core–shell structure using a strategic design approach, serving as a conductive framework for supercapacitors. The innovative Co₂O₃@CoMo₂S₄ 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 Co₂O₃@CoMo₂S₄//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.