Centrifugally spun porous carbon microfibers as interlayer for Li–S batteries

摘要: Lithium–sulfur (Li–S) batteries have attracted great interest owing to their high energy density. However, shuttling of polysulfides deteriorates the electrochemical performance Li–S and prevents practical applications. Placing a conductive porous interlayer structure between cathode separator limits effect improves cycling performance. Here, carbon microfibers are fabricated via fast, safe cost-effective centrifugal spinning approach resultant centrifugally spun (CS-PCMFs) evaluated for use as an in batteries. The highly fibrous is observed from SEM TEM images, initial discharge capacity 1485 mAh g−1 achieved. A reversible 615 mAh g−1 reached after 200 cycles at 0.2 C. In addition, cell with CS-PCMF has low resistance 25 O, whereas that without 55 O. Owing resistance, delivers around 600 mAh g−1 1 C, while exhibits lower 250 mAh g−1. Therefore, this work provides new designing microfiber exceptional