With the ever-increasing demands of electrochemical energy storage, lithium–sulfur (Li–S) batteries have drawn more attention because of their superior theoretical energy density and high specific capacity. However, practical applications of Li–S batteries suffer from problems such as low conductivity of sulfur and discharged products, severe polysulfide shuttling effect, and large volume change of sulfur during cycling, resulting in sluggish rate performance, and unsatisfactory cycle life. Various nanostructured carbon materials have been served as barrier layers to overcome these problems. In particular, carbon nanotubes (CNTs) with unique 1D nanostructure, have been introduced to Li–S batteries as the intermediate layers because of its superior flexibility, excellent electrical conductivity, and good chemical stability. Moreover, CNTs and CNTs-based barrier layers could also curb lithium polysulfides shuttling. In the minireview, we summarize recent works of CNTs-based materials as modifying interlayers for Li–S batteries. In addition, the strategies to enhance electrochemical performances of the batteries are summarized and discussed. Finally, the challenges and prospects for future research of CNTs-based materials as interlayer are proposed. We hope this review will be useful for designing and fabricating high-performance Li–S batteries and boost their practical applications.

随着对电化学储能的不断增长的需求，锂硫（Li–S）电池因其卓越的理论能量密度和高比容量而倍受关注。但是，Li-S电池的实际应用存在以下问题，例如硫和放电产物的电导率低，多硫化物的严重穿梭效应以及循环过程中硫的体积变化大，导致速率性能低下以及循环寿命不足。各种纳米结构的碳材料已经用作阻挡层以克服这些问题。特别是，具有独特的一维纳米结构的碳纳米管（CNTs）由于其优越的柔韧性，出色的导电性和良好的化学稳定性而被引入到Li-S电池中作为中间层。此外，CNT和基于CNT的阻挡层也可以抑制多硫化锂的穿梭。在这份小型回顾中，我们总结了基于CNTs的材料的最新工作，这些材料是修饰Li-S电池的中间层。此外，总结和讨论了提高电池电化学性能的策略。最后，提出了碳纳米管基材料作为中间层的挑战和未来研究的前景。我们希望这篇评论对设计和制造高性能Li-S电池有用，并能促进其实际应用。最后，提出了碳纳米管基材料作为中间层的挑战和未来研究的前景。我们希望这篇评论对设计和制造高性能Li-S电池有用，并能促进其实际应用。最后，提出了碳纳米管基材料作为中间层的挑战和未来研究的前景。我们希望这篇评论对设计和制造高性能Li-S电池有用，并能促进其实际应用。