As a kind of natural porous nanorods, attapulgites (ATTP) are widely used in many fields because of their high specific surface area, high porosity and strong adsorption ability. In this work, ATTP and multiwalled carbon nanotubes (MWCNTs) co-integrated polyacrylonitrile (PAN) hierarchical porous membrane (ATTP/CNTs@PAN) has been fabricated and investigated as a multifunctional interlayer for lithium-sulfur batteries. Due to a synergistic effect of ATTP and the carboxylated MWCNTs, the porous interlayer is able to effectively suppress the shuttle effect by trapping and confining the dissolved polysulfides. Meanwhile, the addition of MWCNTs improves the conductivity of the composite membrane, which is beneficial for the reutilization of the active species. Therefore, the cells with the interlayer demonstrates superior electrochemical performance, delivering a high initial discharge capacity of 1283 mAh g⁻¹ at 0.2 C, and retaining 785 mAh g⁻¹ after 300 cycles with a Coulombic efficiency exceeding 99%. Meaningfully, this porous composite membrane is low-cost and very effective for high performance Li-S batteries.

凹凸棒石（ATTP）作为一种天然多孔纳米棒，因其高比表面积、高孔隙率和强吸附能力而被广泛应用于许多领域。在这项工作中，ATTP 和多壁碳纳米管（MWCNTs）共集成聚丙烯腈（PAN）分级多孔膜（ATTP/CNTs@PAN）已被制造和研究作为锂硫电池的多功能夹层。由于ATTP和羧化MWCNT的协同作用，多孔夹层能够通过捕获和限制溶解的多硫化物来有效抑制穿梭效应。同时，MWCNTs的加入提高了复合膜的导电性，有利于活性物质的再利用。因此，具有夹层的电池表现出优异的电化学性能，^-1在 0.2 C，并且在 300 次循环后保持 785 mAh g ^-1的库仑效率超过 99%。有意义的是，这种多孔复合膜成本低，对高性能锂硫电池非常有效。