A new nanocomposite based on CuCo₂S₄ nanosheets and polyaniline conducting polymer is synthesized and introduced as an electrode material for energy storage supercapacitors. First, CuCo₂S₄ nanosheets are prepared on carbon cloth through hydrothermal route and a wide potential window of 1.2 V is obtained for this material in Na₂SO₄ electrolyte. Then, a nanocomposite with an optimized amount of polyaniline is synthesized through chemical polymerization of aniline monomer on the surface of CuCo₂S₄ nanosheets and its electrochemical behavior is studied. Regarding the synergistic effect between polyaniline and CuCo₂S₄, the resultant CuCo₂S₄/polyaniline electrode exhibits a wider potential range and an improved specific capacitance of 920 F g⁻¹ at a current density of 1 A g⁻¹, significantly higher compared to that of bare CuCo₂S₄ nanosheets (780 F g⁻¹). Symmetric supercapacitor assembled by newly prepared CuCo₂S₄/polyaniline as both anode and cathode, demonstrated extended operating potential window (1.8 V) and delivered high energy density of 32.5 Wh kg⁻¹ and power density of 900 W kg⁻¹. These results confirm that the as-prepared nanocomposite exhibits improved electrochemical performance and is a promising candidate to be used in energy storage devices.

合成了一种基于CuCo ₂ S ₄纳米片和聚苯胺导电聚合物的新型纳米复合材料，并将其作为储能超级电容器的电极材料。首先，通过水热法在碳布上制备了CuCo ₂ S ₄纳米片，并在Na ₂ SO ₄电解质中获得了1.2 V的宽电位窗。然后，通过在CuCo ₂ S ₄纳米片的表面上进行苯胺单体的化学聚合，合成了具有最适量聚苯胺的纳米复合材料，并研究了其电化学行为。关于聚苯胺与CuCo ₂的协同作用S ₄，所得CuCo ₂ S ₄ /聚苯胺电极在1 A g ^-1的电流密度下表现出更宽的电势范围和改进的920 F g ^-1的比电容，与裸CuCo ₂ S ₄相比明显更高纳米片（780 F g ^-1）。由新制备的CuCo ₂ S ₄ /聚苯胺作为阳极和阴极组装而成的对称超级电容器，显示了扩展的工作电势窗口（1.8 V），并提供了32.5 Wh kg ^-1的高能量密度和900 W kg ^-1的功率密度。这些结果证实了所制备的纳米复合材料表现出改善的电化学性能，并且是用于储能装置中的有希望的候选者。