To achieve high performance flexible supercapacitors, flexible electrodes with good electrochemical performance, high stability, and superior mechanical property are strongly needed. With their light weight, intrinsically mechanical flexibility, and the unique textile structure, fabrics of polymeric fibers hold great promise as an ideal substrate for building flexible electrodes. However, the exploration of such electrodes that can be prepared in a facile and scalable way, and simultaneously have a high areal capacitance is still a challenge. Here, we report a polypyrrole (PPy)-coated carbon nanotube/cotton hybrid fabric, which are fabricated by a highly facile and scalable knitting and chemical polymerization process, to address above issue. Remarkably, the resulting fabric with a PPy mass loading of 13.2 mg cm⁻² exhibits a high areal capacitance (4192 mF cm⁻² at 5 mA cm⁻²) and good rate capability (50% capacitance retention at 100 mA cm⁻²) as well as excellent cycling stability (95% capacitance retention after 5000 cycles). The quasi-solid-state symmetric supercapacitor assembled with this fabric electrodes delivers an areal capacitance of 1947 mF cm⁻² at 5 mA cm⁻², a maximum energy density of 0.17 mWh cm⁻² and a maximum power density of 25.6 mW cm⁻². Our study therefore provides a new opportunity for developing flexible supercapacitors with high performance and scalable production.

为了获得高性能的柔性超级电容器，强烈需要具有良好的电化学性能，高稳定性和优异的机械性能的柔性电极。聚合物纤维的织物重量轻，固有的机械柔韧性和独特的纺织结构，有望成为构建柔性电极的理想基材。然而，探索能够以容易且可扩展的方式制备并且同时具有高面电容的这种电极仍然是挑战。在这里，我们报道了一种聚吡咯（PPy）涂层的碳纳米管/棉混合织物，该织物是通过高度简便，可扩展的编织和化学聚合工艺制成的，以解决上述问题。值得注意的是，所得织物的PPy质量负载为13.2 mg cm ^-2表现出高面积电容（4192μF的厘米^-2以5mA厘米^-2）和良好的倍率性能（在100mA厘米50％的电容保持^-2（5000次循环后95％的电容保持率）），以及优异的循环稳定性。与此织物电极组装准固态对称超级电容器提供的1947μF的厘米的面积电容^-2以5mA厘米^-2，0.17 mWh的厘米的最大能量密度^-2和25.6毫瓦厘米的最大功率密度^{- 2}。因此，我们的研究为开发高性能，可扩展生产的柔性超级电容器提供了新的机会。