Lithium–sulfur (Li–S) batteries are very promising next‐generation energy‐storage devices due to the extremely high energy density. However, the low capacity and poor cycling life induced by the shuttle effect of polysulfide intermediates impede the practical application of Li–S batteries. Here, a very effective solvent‐engineering strategy is proposed to fabricate thin, compact, and multifunctional binary solvent–engineered polysulfide‐blocking shields (BBSs) with a superior capability of retarding the shuttle and stabilizing the cathode/anode. The Li–S batteries with a BBS separator exhibit enhanced cell kinetics, superb cycling stability with a low decay rate of 0.078% per cycle for 400 cycles at 0.5 C, and a high areal capacity of 4.91 mAh cm⁻² after 100 cycles at 2.37 mA cm⁻². In addition, the industrially viable fabrication of BBS is readily employed in practical Li–S pouch cells. The concept of solvent engineering not only renders functional interlayers/separators that significantly improve the Li–S battery performance but also is simple, versatile, and scalable to be adopted for many other promising research fields of energy storage and materials chemistry.

中文翻译：

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溶剂工程可扩展生产的多硫化物阻隔屏蔽层，以增强实用的锂硫电池

锂硫（Li–S）电池由于极高的能量密度而成为非常有前途的下一代储能设备。然而，多硫化物中间体的穿梭效应引起的低容量和较差的循环寿命阻碍了Li-S电池的实际应用。在这里，提出了一种非常有效的溶剂工程策略，以制造薄，紧凑且多功能的二元溶剂工程聚硫化物阻隔屏（BBS），具有出色的阻隔往复运动和稳定阴极/阳极的能力。带有BBS隔板的Li–S电池具有增强的电池动力学性能，出色的循环稳定性，在0.5 C的条件下400循环时，每个循环的衰减率为0.078％，低，在2.37循环100次后，其单位面积电容为4.91 mAh cm ^-2。毫安厘米^-2。另外，工业上可行的BBS制造很容易在实际的Li-S袋式电池中使用。溶剂工程的概念不仅可以提供功能性的中间层/隔离层，从而显着提高Li-S电池的性能，而且具有简单，通用和可扩展的特点，可用于许多其他有前途的储能和材料化学研究领域。