Abstract Lithium sulfur (Li-S) batteries with high energy density are the promising candidates for the new generation energy storage devices. However, the application of Li-S batteries has been hindered by the poor conductivity of sulfur, polysulfides diffusion, and unsatisfactory practical gravimetric energy density. Herein, the lightweight multiwalled carbon nanotube/polyacrylic acid (MWCNT/PAA) composite film was developed, which could combine functions of the current collector and conductive interlayer into one composite film, to realize the integrated sulfur cathode with successful sufficient electron transport and strong polysulfides adsorption. As a result, the cathode could deliver not only improved cycle performance but also a higher discharging capacity based on the total electrode mass, demonstrating the promising application of the two-in-one integrated sulfur cathode in high-performance Li-S batteries.

中文翻译：

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用于高性能锂硫电池的多功能多壁碳纳米管/聚丙烯酸薄膜二合一集成硫正极

摘要 具有高能量密度的锂硫（Li-S）电池是新一代储能装置的有希望的候选者。然而，锂硫电池的应用受到硫导电性差、多硫化物扩散和实际重量能量密度不理想等问题的阻碍。在此，开发了轻质多壁碳纳米管/聚丙烯酸（MWCNT/PAA）复合膜，将集流体和导电夹层的功能结合到一个复合膜中，实现了具有足够电子传输和强多硫化物的集成硫阴极。吸附。因此，阴极不仅可以提供改善的循环性能，还可以提供基于总电极质量的更高放电容量，