The fast-expanding electric vehicle market demands eco-friendly, high-performance, and low-cost energy storage systems. Lithium-sulfur battery with higher theoretical specific capacity and lower cost is regarded as a promising successor to lithium-ion battery. However, lithium-sulfur battery's polysulfide shuttling and lithium degradation have hindered its practical applications. In this study, cellulose fibers (CFs) were extracted from recycled paper hardboards by a simple alkaline treatment and then coated onto polypropylene separators by vacuum filtration. When being used as lithium-sulfur battery separators, the negatively charged functional groups on the CFs repelled polysulfide ions and redistributed lithium ions, enabling the assembled cells' superior stability and long life span. The lithium-sulfur battery with the recycle paper CF-coated separator exhibited a life span of over 800 cycles with a capacity retention rate of 71.69% and nearly no capacity decay after the initial formation cycles. The finding demonstrates that renewably produced, CF-coated polypropylene separators can simultaneously reduce the shuttle effect and degradation of lithium, paving the way toward commercially -viable and environmentally friendly lithium-sulfur batteries.

迅速发展的电动汽车市场需要环保，高性能和低成本的储能系统。具有更高的理论比容量和更低的成本的锂硫电池被认为是锂离子电池的有前途的后继者。然而，锂硫电池的多硫化物穿梭和锂的降解阻碍了其实际应用。在这项研究中，通过简单的碱处理从回收的纸质硬纸板中提取纤维素纤维（CFs），然后通过真空过滤将其涂覆在聚丙烯隔板上。当用作锂硫电池隔膜时，CF上带负电荷的官能团会排斥多硫化物离子并重新分布锂离子，从而使组装好的电池具有出色的稳定性和长寿命。带有循环纸CF涂层隔膜的锂硫电池寿命超过800次循环，容量保持率为71.69％，并且在初始形成循环后几乎没有容量衰减。该发现表明，可再生生产的，覆有CF的聚丙烯隔膜可以同时减少穿梭效应和锂的降解，从而为商业上可行和环保的锂硫电池铺平了道路。