Abstract To overcome the issue of the shuttle effect of the lithium-sulfur (Li-S) battery upon repeated cycle process, in this work, lithium fluoride (LiF) as a coating to form a crosslinked network structure with aramid paper (AP), which inhibits the diffusion and dissolution of polysulfides. LiF interacts with the electrolyte to form an artificial solid electrolyte interface (SEI) membrane that hinders the transport of polysulfides; The porous structure of the AP interlayer allows the LiF/CNT slurry to adhere tightly. The Li-S battery assembled with LiF/AP interlayer displayed a high discharge capacity of 885 mAh/g at 1C after 200 cycles, with a low attenuation rate of 0.0302 % per-cycle, and the specific capacity of the Li-S battery using the LiF/AP interlayer at 4C is 693 mAh/g. Our researchs are expected to introduce a new generation of high performance Li-S batteries based on a economical and effective strategy of LiF/AP composite interlayer.

中文翻译：

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氟化锂作为改善锂硫电池电化学性能的有效添加剂

摘要 为了克服锂硫（Li-S）电池在重复循环过程中的穿梭效应问题，在这项工作中，氟化锂（LiF）作为涂层与芳纶纸（AP）形成交联网络结构，从而抑制多硫化物的扩散和溶解。LiF 与电解质相互作用形成人造固体电解质界面 (SEI) 膜，阻碍多硫化物的传输；AP 夹层的多孔结构允许 LiF/CNT 浆料紧密粘附。组装有 LiF/AP 中间层的 Li-S 电池在 1C 200 次循环后显示出 885 mAh/g 的高放电容量，每循环 0.0302 % 的低衰减率，并且使用4C 时的 LiF/AP 中间层为 693 mAh/g。