Herein, we report a facile coaxial wet-spinning strategy to continuously produce hollow graphene fibers (HGF) with the merits of high conductivity, excellent flexibility, and enhanced electrode–electrolyte contact. The hollow structure is achieved by introducing reductant-containing coagulant solution into the fiber core with a composition identical to the spinning bath. The produced fibers were assembled into a supercapacitor device with an ultra-high specific capacitance of 711 mF/cm² (i.e. 33.5 mF/cm or 190F/cm³). The combination of outstanding electrochemical and mechanical properties makes this HGF a promising candidate for use in wearable supercapacitors and electronics.

在此，我们报告了一种简便的同轴湿法纺丝策略，可连续生产具有高导电性、优异柔韧性和增强电极-电解质接触等优点的中空石墨烯纤维（HGF）。中空结构是通过将含有还原剂的凝固剂溶液引入纤维芯中实现的，其成分与纺丝浴相同。^{将生产的纤维组装成具有711 mF/cm 2}（即33.5 mF/cm或190F/cm ³）的超高比电容的超级电容器装置。出色的电化学和机械性能相结合，使这种 HGF 成为可穿戴超级电容器和电子产品的有希望的候选者。