Lithium-sulfur batteries (LSBs) are one of the most promising energy storage devices because of their high theoretical energy density; however, inherent issues including poor electrical conductivity and severe dissolution of S and its discharged products hinder their practical applications. MXenes have metallic conductivity, ultra-thin two-dimensional (2D) structures, rich surface functional groups, and macrostructural adjustability and have been widely used to design advanced sulfur hosts. 3D network structures assembled by 2D MXene nanosheets have shown superior performance for improving reaction kinetics, accommodating and dispersing sulfur at the micro-/nanoscale, and capturing polysulfides due to their porous interconnected structure. Herein, the applications of MXene architectures related to 2D layered structures, 3D multilayered structures, and 3D spherical structures as sulfur hosts are reviewed. The structure-performance relationship, challenges for current designs, and opportunities for future 3D architectures for LSBs are also analyzed.

锂硫电池（LSBs）因其高理论能量密度而成为最有前途的储能装置之一；然而，包括导电性差和硫及其放电产物严重溶解在内的固有问题阻碍了它们的实际应用。MXenes 具有金属导电性、超薄二维 (2D) 结构、丰富的表面官能团和宏观结构可调性，已广泛用于设计高级硫主体。由 2D MXene 纳米片组装的 3D 网络结构在改善反应动力学、在微/纳米尺度上容纳和分散硫以及由于其多孔互连结构捕获多硫化物方面表现出优异的性能。在此，MXene 架构在 2D 分层结构、3D 多层结构、和作为硫主体的 3D 球形结构进行了审查。还分析了 LSB 的结构-性能关系、当前设计面临的挑战以及未来 3D 架构的机会。