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首页> 外文期刊>International Journal of Electrochemical Science >Vapor Growth Carbon Fiber Felt as an Efficient Interlayer for Trapping Polysulfide in Lithium-Sulfur Battery
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Vapor Growth Carbon Fiber Felt as an Efficient Interlayer for Trapping Polysulfide in Lithium-Sulfur Battery

机译：气相生长碳纤维毡作为捕集锂硫电池中多硫化物的有效中间层

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摘要

Lithium-sulfur (Li-S) batteries with high theoretical specific capacity and energy density are consider as one of the most promising electrical energy storage application. However, the practical use of Li-S batteries is hindered mainly due to the serious polysulfide shuttling phenomenon. Therefore, the best way to enhance the electrochemical performance of Li-S battery is controlling the shuttling effect caused by the dissolution of polysulfide in the electrolyte. Herein, three different carbon felts were prepared by using vapor growth carbon fiber (VGCF), activated carbon (AC) and super P (SP), respectively, and were used as interlayer between cathode and separator to trap intermediates polysul?des. As a result, the Li-S battery with VGCF interlayer showed high specific initial discharge capacity of 1262 mAh g-1 and superior cycling performance (836 mAh g-1 after 100 cycle) at 0.1C.
机译：具有高理论比容量和能量密度的锂硫（Li-S）电池被认为是最有前途的电能存储应用之一。然而，主要由于严重的多硫化物穿梭现象而阻碍了Li-S电池的实际使用。因此，增强Li-S电池电化学性能的最佳方法是控制由多硫化物溶解在电解液中引起的穿梭效应。此处，分别通过使用气相生长碳纤维（VGCF），活性炭（AC）和超级P（SP）制备了三种不同的碳毡，它们被用作阴极和隔板之间的中间层，以捕获中间体多硫化物。结果，具有VGCF中间层的Li-S电池在0.1C下显示出1262 mAh g-1的高比初始放电容量和优异的循环性能（100次循环后836 mAh g-1）。

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