This study concerns the development of a well-defined synthetic route to obtain lignin-derived multifunctional graft polymers by simple chemical modification and atom-transfer radical polymerization. By grafting ion-conducting and cross-linkable moieties onto the lignin, star-shaped functional polymers are prepared. Upon cross-linking under ultraviolet light irradiation, the resulting polymer network exhibits mechanical stability even at high temperature, whereas the chain mobility is maintained despite the cross-linked structure. Their use as solid polymer electrolytes (SPEs) and binders for all-solid-state lithium metal batteries (LMBs) is also evaluated. The lignin-derived graft polymers provide a facile ion conduction pathway and also efficiently suppress lithium dendrite growth during cycling, thereby attaining excellent cycling performance for the LMB cell compared to that with a conventional liquid electrolyte-Celgard system.

中文翻译：

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可持续的木质素衍生的交联接枝聚合物，作为锂金属电池的电解质和粘合剂材料。

这项研究涉及开发明确的合成途径，以通过简单的化学修饰和原子转移自由基聚合获得木质素衍生的多功能接枝聚合物。通过将离子导电和可交联的部分接枝到木质素上，制备了星形功能聚合物。在紫外线照射下进行交联时，所得的聚合物网络即使在高温下也表现出机械稳定性，而尽管具有交联结构，仍保持链迁移率。还评估了它们作为全固态锂金属电池（LMB）的固体聚合物电解质（SPE）和粘合剂的用途。木质素衍生的接枝聚合物提供了便捷的离子传导途径，并在循环过程中有效抑制了锂枝晶的生长，