Lithium-sulfur battery (Li-S battery) is regarded as one of the most promising next generation energy storage system due to high specific energy and low cost. However, the existing problems including the shuttle effect of lithium polysulfides (LiPSs) and the volume effect of active material during electrochemical process lead to rapid capacity attenuation and low Coulombic efficiency, which finally hinders the practical application of Li-S battery. Therefore, a multifunctional binder is developed in this work to address above issues. In our strategy, a cross-linked binder (named as PLG) is in-situ generated by the hydrogen-bonding interaction between polyacrylamide, locust bean gum and gellan gum, which is conducive to suppress the electrode volume variation by cross-linked network and anchor the LiPSs due to the abundant hydroxyl/amino groups in polymer backbone. Remarkably, the PLG based electrode presents the discharge capacity of 623.4 mAh g^-1 at 0.2 C after 200 cycles, which is almost twice as high as that of PVDF counterpart (342 mAh g^-1). Most importantly, the cycling performance is demonstrated across a wide temperature range from 0 to 60°C, high capacity of 516 mAh g^-1 and 440 mAh g^-1 are remained after long-term cycling, respectively. Furthermore, the lithium-ion diffusion influenced by binder is delicately analyzed using cyclic voltammetry at variable speeds and in-situ electrochemical impedance spectroscopy, PLG binder is conducive to improve the reaction kinetic of electrode due to generation of cross-linked structure. This research demonstrates promising performance of multifunctional polysaccharide-based binder for wide temperature operable lithium-sulfur batteries.

锂硫电池（Li-S电池）以其高比能量和低成本被认为是最有前途的下一代储能系统之一。然而，多硫化锂（LiPSs）的穿梭效应和活性物质在电化学过程中的体积效应等问题导致容量衰减快，库仑效率低，最终阻碍了锂硫电池的实际应用。因此，本工作开发了一种多功能粘合剂来解决上述问题。在我们的策略中，交联粘合剂（称为 PLG）是通过聚丙烯酰胺、刺槐豆胶和结冷胶之间的氢键相互作用原位生成的，这有利于通过交联网络抑制电极体积变化，并由于聚合物主链中丰富的羟基/氨基基团而锚定 LiPSs。值得注意的是，基于 PLG 的电极呈现出 623.4 mAh g 的放电容量^{-1在 0.2 C 下循环 200 次后，几乎是 PVDF 对应物 (342 mAh g -1} )的两倍。最重要的是，循环性能在 0 至 60°C 的宽温度范围内得到证明，在长期循环后分别保持516 mAh g ^-1和 440 mAh g ^{-1的高容量。}此外，使用变速循环伏安法和原位电化学阻抗谱对粘合剂对锂离子扩散的影响进行了精细分析，PLG粘合剂由于交联结构的产生而有助于改善电极的反应动力学。这项研究证明了多功能多糖基粘合剂在宽温可操作锂硫电池中的良好性能。