Abstract Lithium-sulfur (Li-S) batteries represent one of the next-generation Li-ion batteries. However, the poor conductivity and large volumetric expansion of sulfur result in low rate performance and unfavorable cycle stability. Herein, a laminated structure of sulfur/reduced graphene oxide intercalated by carbon nanotube (CNT-rGO/S) composites was designed and fabricated for the first time to address the issue. The composites prepared via hydrothermal coprecipitation was endowed a perfect crystal and highly integrated structure, which retained a good electrical conductivity and accommodated the sulfur volume expansion due to the sufficient free space between the CNT-intercalated graphene layers. The CNT-rGO/S cathode exhibits a good capacity of 783.3 mAh g−1 at 0.5 C and a desirable cycling stability with 77.2% of the capacity remaining after 1000 cycles even at a rate as high as 5 C, which offers great potential for practical applications in Li-S batteries.

中文翻译：

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用于高倍率和长寿命锂硫电池的碳纳米管插层 rGO/硫叠层结构

摘要 锂硫（Li-S）电池是下一代锂离子电池的代表之一。然而，硫的导电性差和体积膨胀大导致倍率性能低和循环稳定性差。在此，首次设计并制造了由碳纳米管（CNT-rGO/S）复合材料插入的硫/还原氧化石墨烯的层状结构以解决该问题。通过水热共沉淀制备的复合材料具有完美的晶体和高度集成的结构，由于碳纳米管插层石墨烯层之间有足够的自由空间，该复合材料保持良好的导电性并适应硫的体积膨胀。CNT-rGO/S 正极在 0.5 C 下表现出 783.3 mAh g-1 的良好容量和理想的循环稳定性，77.