Pressing challenges facing future lithium batteries include the realization of a high specific capacity, reliable cycle life, fast charging, and improved safety. Herein, cutting‐edge lithium–sulfur batteries based on sulfur‐rich polymers that demonstrate a high discharge capacity of 1346 mAh g⁻¹ at 0.1C, a record‐high rate performance of 833 mAh g⁻¹ at 10C, and long lifetime of 500 cycles with a low capacity decay of 0.052% per cycle are reported. These are realized via the linker‐controlled mass synthesis of sulfur‐rich polymers with the possible tuning of charge transfer properties and effective suppression of the polysulfide‐shuttle via chemical interactions. In particular, the use of tetra(allyloxy)‐1,4‐benzoquinone linker enables the conductivity enhancement by a factor of 450 and lithium diffusion kinetics improvement by two orders of magnitude during redox reactions, compared with elemental sulfur cathodes. This work overcomes fundamental limitations of organosulfur cathode materials, and could pave the way for the development of next‐generation lithium batteries.

中文翻译：

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具有功能连接子的富硫聚合物，用于大容量和快速充电的锂硫电池

未来锂电池面临的紧迫挑战包括实现高比容量，可靠的循环寿命，快速充电和提高安全性。在此，基于富含硫的聚合物的尖端锂硫电池在0.1C时具有1346 mAh g ^-1的高放电容量，创下了833 mAh g ^-1的高倍率性能据报道，它在10℃下具有500个循环的长寿命，且每个循环的容量衰减低至0.052％。这些是通过接头控制的富硫聚合物的大规模合成实现的，可以通过调节电荷转移性能和通过化学相互作用有效抑制多硫化物穿梭。尤其是，与元素硫阴极相比，使用四（烯丙氧基）-1,4-苯醌醌连接器可使氧化还原反应期间的电导率提高450倍，锂扩散动力学提高两个数量级。这项工作克服了有机硫阴极材料的基本局限性，并为下一代锂电池的开发铺平了道路。