Lithium-sulfur (Li-S) batteries have attracted intensive attention for its high theoretical energy density. However, the real energy density and cycle life still remain challenges for their practical applications. The critical parameters of sulfur cathodes are the areal capacity and porosity which determine the gravimetric and volumetric energy density, and the flexibility related with cycle stability. Herein we proposed an artificial multifunctional flexible binder (AFB) to enable high-areal capacity (8.31 mAh cm^-2) and flexible cathode via traditional blade-casting method. Owing to designed crosslinking network and enhanced kinetics, it exhibits high specific capacity and stable cycling without cathode structure collapse. Moreover, it delivered superior sulfur utilization with density up to 1.54 g cm^-3 corresponding to porosity of 13.3 %. Designed dense electrode revealed normal electrochemical behavior at initial cycles even under lean electrolyte of 1 ml g^-1_composite, ascribed to the unique solid-solid conversion mechanism of [email protected]

锂硫（Li-S）电池因其较高的理论能量密度而备受关注。然而，实际的能量密度和循环寿命仍然对其实际应用构成挑战。硫阴极的关键参数是面积容量和孔隙率，它们确定重量和体积能量密度，以及与循环稳定性有关的灵活性。在这里，我们提出了一种人造多功能柔性粘合剂（AFB），以通过传统的叶片铸造方法实现高面积容量（8.31 mAh cm ^-2）和柔性阴极。由于设计的交联网络和增强的动力学，它显示出高的比容量和稳定的循环，而不会破坏阴极结构。此外，它具有出色的硫利用率，密度高达1.54 g cm^-3对应于13.3％的孔隙度。设计的致密电极即使在1 ml g ^-1_复合物的稀薄电解质下也能在初始循环中显示出正常的电化学行为，这归因于[email protected]独特的固-固转化机理