Lithium–sulfur (Li–S) battery with a new configuration is demonstrated by inserting a flexible nitrogen-doping carbon nanofiber (N-CNFs) interlayer between the sulfur cathode and the separator. The N-CNFs film with high surface roughness and surface area is fabricated by electrospinning and a subsequent calcination process. The N-CNFs film interlayer not only effectively traps the shuttling migration of polysulfides but also gives the whole battery reliable electronic conductivity, which can effectively enhance the electrochemical performance of Li–S batteries. Finally, Li–S batteries with long cycling stability of 785 mAh/g after 200 cycles and good rate capability of 573 mAh/g at 5 C are achieved.

中文翻译：

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高度粗糙的表面碳纳米纤维薄膜作为锂硫电池的有效夹层

通过在硫正极和隔膜之间插入柔性掺氮碳纳米纤维（N-CNFs）夹层，展示了具有新配置的锂硫（Li-S）电池。具有高表面粗糙度和表面积的 N-CNFs 薄膜是通过静电纺丝和随后的煅烧工艺制造的。N-CNFs 薄膜夹层不仅有效地捕获了多硫化物的穿梭迁移，而且为整个电池提供了可靠的电子导电性，可以有效提高 Li-S 电池的电化学性能。最后，锂硫电池在 200 次循环后具有 785 mAh/g 的长循环稳定性和 5 C 下 573 mAh/g 的良好倍率性能。