Shuttle effect of lithium polysulfides (LiPSs) and the problems arising from lithium dendrites impede the practical applications of Li-S batteries. Herein, a scalable and fire-retardant janus membrane (C@OPBI-CeO₂//GF) with glass fiber membrane (GF) as substrate and hierarchically porous C@OPBI-CeO₂ membrane as the cathode has been constructed. The cathode membrane with porous conductive networks can replace the conventional Al foil and significantly promote Li⁺ and electron transportation. Meanwhile, the doped CeO₂ nanoparticles in the membrane can trap and catalyze LiPSs transformation. The interwoven GF membrane allows the uniform distribution of Li⁺ on Li plate by redistributing the Li⁺ flux. It also facilitates the rapid diffusion of Li⁺ and promotes the reversible Li plating and stripping processes against dendrite growth. Furthermore, the introduction of OPBI and GF improve the structural stability and high temperature resistance of the membrane which are of great significance to realize the commercial application of Li-S batteries. The batteries assembled with the janus membrane have a specific capacity of 620 mA h g ^− 1 after 550 cycles at a current density of 1 C, and still deliver a capacity of 720 mA h g ^− 1 after 100 cycles even at a high sulfur loading of 5 mg cm⁻².

多硫化锂（LiPSs）的穿梭效应和锂枝晶引起的问题阻碍了锂硫电池的实际应用。在此，构建了一种以玻璃纤维膜（GF）为基底，分级多孔C@OPBI -CeO ₂膜为阴极的可扩展阻燃janus膜（ C@OPBI-CeO _{2 //GF）。}具有多孔导电网络的正极膜可以替代传统的铝箔，显着促进Li ⁺和电子传输。同时，膜中掺杂的CeO _{2纳米颗粒可以捕获和催化LiPSs}转化。交织的 GF 膜使 Li ^{+均匀分布}通过重新分配 Li ⁺通量在 Li 板上。^{它还促进了 Li +}的快速扩散，并促进了可逆的 Li 电镀和剥离过程以防止枝晶生长。此外，OPBI和GF的引入提高了隔膜的结构稳定性和耐高温性，对实现锂硫电池的商业化应用具有重要意义。用双面膜组装的电池 在 1 C 的电流密度下经过 550 次循环后的比容量为 620 mA  hg ^{-  1} ，即使在 5 的高硫负载下经过 100 次循环后仍可提供 720 mA hg ^{-  1}的容量毫克厘米^-2。