The main challenge in developing foldable Li–S batteries (LSB) lies in developing an electrode that is ultraflexible, conductive, and catalytic for dissolved lithium polysulfides (LiPSs). In this paper, lightweight macromolecule graphitic carbon nitride (g‐C₃N₄) film and a conductive polymer (CP) of poly(3,4‐ethylenedioxythiophene) shell are introduced into flexible LSBs by compositing with carbon cloth (CC). In the designed hybrid of CP/g‐C₃N₄@CC, 2D g‐C₃N₄ is used in the form of an effective trapper and functions as a continuous catalytic layer for LiPSs via the formation of pyridinic‐N‐Li bonds. This is revealed by both experimental investigations and theoretical analysis. The sandwich‐like CC and CP simultaneously bring an omnidirectional conductive network for fast interfacial reaction kinetics. With these benefits, the self‐supported CP/g‐C₃N₄@CC forms a powerful interaction system to fully in situ “lock” LiPSs in the commercial CC matrix. Thus, a substantially enhanced electrochemical performance is obtained at a high sulfur loading (4.7 mg cm^–2) even operating in a pouch cell. This work may provide a potential avenue for practical use of high‐performance LSBs toward flexible energy‐storage devices.

中文翻译：

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催化和双导电基质调节柔性Li–S电池中多硫化物的动力学行为

开发可折叠的Li–S电池（LSB）的主要挑战在于开发一种电极，该电极具有超柔韧性，导电性和可催化溶解多硫化锂（LiPSs）的能力。本文将轻质高分子石墨碳氮化物（g-C ₃ N ₄）膜和聚（3,4-乙撑二氧噻吩）壳的导电聚合物（CP）通过与碳布（CC）混合引入柔性LSB中。在CP / g‐C ₃ N ₄ @CC的设计混合中，2D g‐C ₃ N ₄以有效的捕集剂形式使用，并通过形成吡啶-N-Li键作为LiPS的连续催化层。实验研究和理论分析都揭示了这一点。夹层状CC和CP同时带来了全方位导电网络，可实现快速的界面反应动力学。有了这些好处，自立式CP / g-C ₃ N ₄ @CC形成了一个强大的交互系统，可以将LiPS完全原位“锁定”在商业CC矩阵中。因此，即使在袋式电池中运行，在高硫负荷（4.7 mg cm ^-2）下，电化学性能也得到了显着提高。这项工作可能为高性能LSB应用于柔性储能设备提供潜在的途径。