High performance lightweight and flexible supercapacitors with superior electrochemical performance are in extremely high demand for wearable electronic device applications. Herein, a novel synthesis process is reported for developing highly flexible supercapacitor electrodes from carbon black doped carbon nanofiber/polyaniline core–shell nanofibers via electrospinning followed by carbonization and electrospray techniques. Resultant supercapacitor electrodes offer exceptional specific capacitance (SC) of 501.6 F g⁻¹ at 0.5 A g⁻¹, excellent capacitance retention of 91% even after 5000 cycles, demonstrating a long and stable life of the fabricated device. Moreover, solid state supercapacitor shows no obvious change in SC when subjected to various bending angles up to 180°. This simple three step (i.e., electrospinning, carbonization, and electrospray) fabrication technique paves new insights into the development of lightweight flexible supercapacitors.

中文翻译：

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聚苯胺富集的具有核-壳结构的柔性碳纳米纤维，用于高性能可穿戴超级电容器

对可穿戴电子设备的应用提出了极高的要求，即具有优异电化学性能的高性能轻巧，柔性超级电容器。本文报道了一种新颖的合成工艺，该工艺通过静电纺丝，随后的碳化和电喷雾技术，将碳黑掺杂的碳纳米纤维/聚苯胺核-壳纳米纤维开发为高度柔性的超级电容器电极。最终的超级电容器电极在0.5 A g ^-1时可提供501.6 F g ^-1的出色比电容（SC），即使经过5000次循环，仍具有91％的出色电容保持率，这表明所制造的器件具有较长且稳定的寿命。此外，固态超级电容器在经受高达180°的各种弯曲角度时，在SC上没有显示出明显的变化。这种简单的三步（即静电纺丝，碳化和电喷雾）制造技术为轻型柔性超级电容器的开发提供了新的见解。