The shuttle effect caused by soluble lithium polysulfides (LiPSs) hinders the practical application of lithium–sulfur batteries. The sluggish reaction kinetics of LiPSs results in rapid capacity decay. In this work, we constructed a free-standing multifunctional interlayer decorated with V₂O₃/VN catalysts to suppress the shuttle effect and boost the redox reaction kinetics. The introduction of VN with strong chemical adsorption improves the conductivity of V₂O₃, which is beneficial for the kinetics of conversion reaction. In addition, the micro/mesopores inside the structure not only facilitate ion diffusion but also buffer the volume change of the sulfur cathode during the cycling process. Benefiting from the synergistic effects, the fabricated cells exhibit a high specific capacity of 1419.5 mAh g⁻¹ at 0.1C. The cell with V₂O₃/VN/C exhibits a promising cycling performance over 1000 cycles with a decay rate of 0.037% per cycle at 1C. The synergistic effects of electrocatalysts and conductive carbon material provide inspiration on the development of high-performance Li–S batteries.

可溶性多硫化锂（LiPSs）引起的穿梭效应阻碍了锂硫电池的实际应用。LiPSs缓慢的反应动力学导致容量快速衰减。_{在这项工作中，我们构建了一个装饰有 V 2} O ₃ /VN 催化剂的独立式多功能中间层，以抑制穿梭效应并提高氧化还原反应动力学。具有强化学吸附作用的VN的引入提高了V ₂ O _{3的电导率}，这有利于转化反应的动力学。此外，结构内部的微孔/中孔不仅有利于离子扩散，还可以缓冲循环过程中硫正极的体积变化。受益于协同效应，制造的电池在 0.1C时表现出 1419.5 mAh g ^{-1的高比容量。}具有 V ₂ O ₃ /VN/C 的电池在 1000 次循环中表现出有希望的循环性能，在 1C 下每个循环的衰减率为 0.037%。电催化剂和导电碳材料的协同效应为高性能锂硫电池的发展提供了灵感。