Rational structure designs of cathodes with high electrical conductivity and strong interface adsorption to lithium polysulfide are a huge requirement for lithium sulfur (Li-S) battery. Herein, we report a multifunctional pomegranate-like porous carbon nanofibers with LaF₃ doped ([email protected]) by electro-blowing spinning technique and subsequent one-step carbonization process for high stability Li-S battery. Interestingly, a number of hollow and mesoporous carbon grains with high graphitization evenly and densely grow inside the macroporous carbon skeleton, which can construct a fast and hierarchical transfer channel and largely enrich the exposed active sites. More importantly, the polar interfaces decorated with active ionic C-F and LaF₃ nanocrystal have strong trapping to the lithium polysulfide during cycles. Therefore, the [email protected] cathode exhibits a high discharge capacity of 640 mAh·g^-1 and a low average capacity decay of 0.05$\%$ during 1000 cycles at 5 C, which will shed some lights on the development of other biomimetic materials for various energy conversion and storage systems.

具有高电导率和对多硫化锂的强界面吸附作用的阴极的合理结构设计是锂硫（Li-S）电池的巨大需求。本文中，我们报告了一种通过电吹纺技术掺入LaF ₃的多功能石榴状多孔碳纳米纤维（受电子邮件保护），以及随后的一步碳化过程，以制备高稳定性的Li-S电池。有趣的是，大量具有高石墨化度的空心和中孔碳晶粒均匀且密集地生长在大孔碳骨架中，这可以构建一个快速而分层的传输通道并大大丰富暴露的活性位点。更重要的是，极性界面装饰有活性离子CF和LaF ₃纳米晶体在循环过程中对聚硫化锂有很强的捕获能力。因此，[受电子邮件保护的]阴极具有640 mAh·g ^-1的高放电容量和0.05的低平均容量衰减率$％$ 在5 C下1000次循环中，这将为开发用于各种能量转换和存储系统的其他仿生材料提供一些启示。