Lithium-sulfur (LiS) batteries are considered as one of the most promising high-energy storage devices due to the high theoretical capacity (1675 mA·h·g⁻¹) and large energy density (2600 W·h·kg⁻¹). However, the poor conductivity of sulfur and “shuttle effect” of soluble polysulfide intermediates limit practical applications of LiS batteries. Herein, four kinds of carbon sub-micro fibers with different structures were designed and prepared, the effect of structure on LiS battery was studied. On this basis, the XO (X = Ti, Mn) decorated hollow multi-channel carbon sub-micro carbon fibers (HMCMFs) were prepared by electrospinning and carbonization. The HMCMFs can not only supply nanopores for relieving the expansion of sulfur but also served as high conductivity freestanding substrate for sulfur loading, meanwhile the decorated XO (X = Ti, Mn) can provide powerful chemical adsorption to polysulfide intermediates and limit “shuttle effect” Therefore, the TiO-HMCMFs/S composite shows high specific capacity of 900 mA·h·g⁻¹ and maintain stable specific capacities up to ∼600 mA·h·g⁻¹ over 300 cycles at 0.1 A·g⁻¹. This work offers a facile method to build efficient sulfur cathode to acquire LiS batteries with high performance.

锂硫（Li S）电池由于具有高理论容量（1675 mA·h·g ^－1）和高能量密度（2600 W·h·kg ^－1 ）而被认为是最有前途的高能量存储设备之一). 然而，硫的导电性差和可溶性多硫化物中间体的“穿梭效应”限制了锂硫电池的实际应用。在此，设计制备了四种不同结构的碳亚微纤维，研究了结构对Li的影响S电池进行了研究。在此基础上，通过静电纺丝和碳化制备了XO（X = Ti，Mn）装饰的中空多通道碳亚微碳纤维（HMCMFs）。HMCMFs不仅可以提供纳米孔以缓解硫的膨胀，还可以作为高电导率的独立底物用于硫负载，同时修饰的XO（X = Ti，Mn）可以为多硫化物中间体提供强大的化学吸附并限制“穿梭效应”因此，TiO2-HMCMFs/S 复合材料显示出 900 mA·h·g ^{-1的高比容量，并在 0.1 A·g -1}下在 300 次循环后保持高达 ~600 mA·h·g ^-1的稳定比容量。这项工作提供了一种构建高效硫正极以获取锂的简便方法高性能S电池。