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中文摘要：
锂硫二次电池作为一种高能量密度锂电池体系，近年来受到广泛关注．本文介绍了锂硫电池的工作原理和目前存在的问题，总结了锂硫电池碳硫复合正极材料、电解质体系等关键材料以及“多硫离子溶解”关键难题等方面的研究进展，特别是本研究组最近提出了一种可以同时解决多硫离子溶解和稳定金属锂负极的高锂盐浓度“Solvent—in—Salt”（sIs）电解液体系；最后简要评述了目前各国锂硫电池研究现状并对锂硫电池未来进行了展望．
英文摘要：
Recently, lithium-sulfur batteries as high energy-density energy storage system have attracted more and more attention. In this article, we first introduce lithium-sulfur batteries and then review recent progress in carbon-sulfur cathodes and electrolytes for lithium-sulfur batteries. Furthermore, we analyze and summarize the reported strategies to inhibit ＂lithium polysulfide dissolution＂. Particularly, we propose a new class of bi-functional ＂Solvent-in-Salt＂ （SIS） electrolyte with high lithium salt concentration for solving the problems resulting from both sulfur and lithium metal electrodes. Finally, we present the outlook for future lithium-sulfur batteries.
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