The rational design of hybrid structures which consist of multiple components with distinctive characteristics is an effective strategy for developing materials when energy storage applications. In this paper, a novel hierarchical CoS₂@Ni(OH)₂ core-shell nanotube array covered carbon cloth is successfully designed and synthesized for use in supercapacitors (SCs). The CoS₂ nanotube (NT) arrays are synthesized using the metal organic framework template method, and serve as the scaffold for the growth of ultrathin Ni(OH)₂ nanosheets via the electrodeposition process. The optimized CoS₂@Ni(OH)₂ hybrid electrode exhibits high specific capacity of 743 C g⁻¹ at current density of 1 A g⁻¹, which is nearly 5.9 times higher than that of a single CoS₂ electrode. In addition, a solid state hybrid supercapacitor device is fabricated with CoS₂@Ni(OH)₂ hybrid electrode as positive and activated carbon as negative. The as-prepared devices deliver high energy density (29.22 W h kg⁻¹ at 899.2 W kg⁻¹) and high power density (8.99 kW kg⁻¹ at 11.74 W h kg⁻¹), as well as good cycling stability (85.5% retention of specific capacitance after 3000 cycles). The devices also display excellent flexible properties under different bending conditions. The present work shows that electrode materials with hybrid structure have considerable application prospect for flexible energy storage and conversion.

混合结构的合理设计是由多种具有独特特征的部件组成，是在储能应用中开发材料的有效策略。本文成功设计并合成了一种新型的分层CoS ₂ @Ni（OH）₂核壳纳米管阵列覆盖的碳布，并用于超级电容器（SCs）。使用金属有机骨架模板方法合成了CoS ₂纳米管（NT）阵列，并通过电沉积工艺充当了超薄Ni（OH）₂纳米片生长的支架。优化的CoS ₂ @Ni（OH）₂杂化电极具有743 C g的高比容量^-1以1 A G电流密度^-1，这是比单个的CoS的高近5.9倍₂电极。另外，以CoS ₂ @Ni（OH）₂混合电极为正极，活性炭为负极来制造固态混合超级电容器装置。所制备的器件（29.22 W时公斤提供高能量密度^-1在899.2千克w ^ ^-1）和高功率密度（8.99千瓦千克^-1 11.74 W时千克^-1），以及良好的循环稳定性（3000次循环后，比电容的保留率为85.5％）。该器件在不同的弯曲条件下也显示出出色的柔韧性。目前的工作表明，具有混合结构的电极材料在柔性储能和转化方面具有广阔的应用前景。