In this study, we fabricated the hierarchical NiCo₂S₄@CoS₂ nanostructures on highly conductive flexible carbon cloth (CC) via two-steps hydrothermal method for high-performance supercapacitor hybrid electrode material. The surface morphology of the fabricated hybrid electrode material NiCo₂S₄@CoS₂@CC exposed the formation of hierarchical NiCo₂S₄ ultrathin nanosheets on CoS₂ nanowires over the carbon cloth substrate and thus forming a three-dimensional interconnected porous network. During the electrochemical analysis, the hybrid NiCo₂S₄@CoS₂ nanostructures on CC exhibited an enhanced specific capacitance of ∼1565 F g⁻¹ at a current density of 1 A g⁻¹. A capacitance retention of ∼91% was achieved after 8000 galvanostatic charge/discharge cycles at a current density of 1 A g⁻¹ and a maximum energy density of ∼17 Wh Kg⁻¹ at a power density of 242.8 W Kg⁻¹. Thus, the electrode had a significantly improved supercapacitor performance in terms of a high specific capacitance, excellent cycle stability, and good rate capability.

在本研究中，我们通过两步水热法在高导电性柔性碳布（CC）上制备了分级NiCo ₂ S ₄ @CoS ₂纳米结构，以用于高性能超级电容器混合电极材料。制备的混合电极材料NiCo ₂ S ₄ @CoS ₂ @CC的表面形态暴露了在碳布基底上的CoS ₂纳米线上形成分层的NiCo ₂ S ₄超薄纳米片的形成，从而形成了三维互连多孔网络。在电化学分析中，混合镍钴₂ š _4个@CoS ₂CC上的纳米结构在 1 A g ^-1的电流密度下显示出〜1565 F g ^-1的增强的比电容。在8000 A恒电流充电/放电循环后，在1 A g ^-1的电流密度和 242.8 W Kg ^-1的功率密度下的最大能量密度在〜17 Wh Kg ^-1时，电容保持率达到〜91％。因此，就电极的高比电容，优异的循环稳定性和良好的倍率能力而言，该电极具有显着改善的超级电容器性能。