Obtaining high-capacity electrode materials is a key problem to be solved for high performance supercapacitors. Metal-organic frameworks derivatives have been considered to be ideal electrodes due to their large specific surface area and pore connectivity. Herein, we design a novel controllable structure, in which MnCo₂S₄ nanorods with one-dimensional structure are inserted into three-dimensional ZIF-67 derived Co₉S₈ hollow polyhedrons, the ratio between the two substances can be effectively regulated by controlling the reaction time. Among them, MC-3 sample shows the best performance and its capacity can reach up to 1058.0 F g⁻¹ (146.9 mA h g⁻¹) at 1 A g⁻¹. A supercapacitor constructed by MC-3 as the positive electrode, using activated carbon as the negative electrode, the assembled device shows a high energy density of 35.8 W h kg⁻¹ at 750 W kg⁻¹. Besides, the supercapacitor also shows a steady cycling capacity of 82.1% retention after 6000 cycles. The excellent performance of the hybrid supercapacitor could envision promising applications in future high-performance energy storage devices.

获得高容量的电极材料是高性能超级电容器要解决的关键问题。金属有机骨架衍生物由于其大的比表面积和孔连通性而被认为是理想的电极。在这里，我们设计了一种新颖的可控结构，将一维结构的MnCo ₂ S ₄纳米棒插入三维ZIF-67衍生的Co ₉ S ₈空心多面体中，可以通过控制有效地调节两种物质之间的比例。反应时间。其中，MC-3样品表现出最佳性能，其容量在1 A g ^-1时可达到1058.0 F g ^-1（146.9 mA hg ^-1）。由MC-3作为正极，使用活性炭作为负极的超级电容器，组装后的装置在750 W kg ^-1时显示出35.8 W h kg ^-1的高能量密度。此外，超级电容器在6000次循环后还显示出82.1％的稳定循环容量。混合超级电容器的出色性能可以预见其在未来高性能储能设备中的应用前景。