Lithium-sulfur (Li–S) batteries have attracted considerable attention as next-generation energy storage devices owing to their high theoretical specific capacity and safety. However, the commercialization of Li–S batteries is hindered by critical issues, including the migration of the dissolved lithium polysulfides (LiPSs) from the sulfur electrode to the lithium metal anode, resulting in poor cycling stability. Here, we report a multifunctional interlayer configured with an N-doped carbon framework and titanium nitride nanowires on a polypropylene separator (NC/TiN NWs@PP) to suppress the polysulfide shuttling problem. NC/TiN NWs@PP can be obtained by electrospinning and the subsequent scalable solution-based vacuum filtration. The one-dimensional structure of the TiN NWs can shorten the Li-ion diffusion distance with large electrode/electrolyte interfaces. Furthermore, the N-doped carbon framework in the NWs enables facile electron transportation and allows the suppression of the shuttle effect to improve the electrochemical reaction kinetics. The Li–S battery with a NC/TiN NWs@PP separator exhibited enhanced cycling stability and rate capability, indicating that this could be a new research direction for Li–S batteries.

锂硫（Li–S）电池由于其较高的理论比容量和安全性，已成为下一代储能设备引起了广泛关注。但是，Li-S电池的商业化受到严重问题的阻碍，其中包括溶解的多硫化锂（LiPSs）从硫电极向锂金属阳极的迁移，导致循环稳定性差。在这里，我们报告了一种多功能夹层，该夹层在聚丙烯隔膜（NC / TiN NWs @ PP）上配置了一个N掺杂碳骨架和氮化钛纳米线，以抑制多硫化物的穿梭问题。NC / TiN NWs @ PP可以通过静电纺丝和随后可扩展的基于溶液的真空过滤来获得。TiN NW的一维结构可以缩短具有较大电极/电解质界面的锂离子扩散距离。此外，NW中的N掺杂碳骨架使电子传输变得容易，并抑制了穿梭效应，从而改善了电化学反应动力学。带有NC / TiN NWs @ PP隔膜的Li-S电池具有增强的循环稳定性和倍率性能，这表明这可能是Li-S电池的新研究方向。