The performance of lithium–sulfur (Li–S) batteries is greatly improved by using acidized carbon nanotube paper (ACNTP) to induce in situ polymerization of ether-based DOL/DME liquid to grow an ion-selective solid barrier, to seal in soluble polysulfides on the cathode side. The Li–S battery with the in situ barrier showed an initial specific capacity of 683 mA h g⁻¹ at a high current density of 1675 mA g⁻¹, and maintained a discharge capacity of 454 mA h g⁻¹ after 400 cycles. The capacity decay rate was 0.1% per cycle and a high Coulombic efficiency of 99% was achieved. Experimental characterizations and theoretical models demonstrate the in situ polymerized solid barrier stops sulfur transport while still allowing bidirectional Li⁺ transport, alleviating the shuttle effect and increasing the cycling performance. The soft and sticky nature of the solid electrolyte barrier makes it a good sealant, forming an enclosed catholyte chamber on the sulfur side.

中文翻译：

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酸化的碳纳米管纸上的特殊固体电解质可改善锂硫电池的循环寿命†

通过使用酸化的碳纳米管纸（ACNTP）诱导以醚为基础的DOL / DME液体原位聚合以形成离子选择性固体阻挡层，密封可溶物，锂硫（Li–S）电池的性能得到了极大的改善。阴极侧的多硫化物。具有原位势垒的Li–S电池在1675 mA g ^-1的高电流密度下显示的初始比容量为683 mA hg ^-1，在400个循环后仍保持454 mA hg ^-1的放电容量。每个循环的容量衰减率为0.1％，库仑效率高达99％。实验表征和理论模型证明了原位聚合的固体阻挡层可阻止硫的传输，同时仍允许双向Li ⁺传输，从而减轻了穿梭效应并提高了循环性能。固体电解质屏障的柔软和粘性使它成为良好的密封剂，在硫侧形成了一个封闭的阴极室。