Hyperbranched polymers comprised of polyrotaxanes as mechanically stable backbone and grafted polycaprolactone (PCL) side chains are utilized as solid polymer electrolyte for application in lithium metal (LMBs) and lithium ion batteries (LIBs). The polyrotaxanes were obtained from self-assembly of Cyclodextrin (CD) host molecules threading onto polyethylenoxide (PEO) chains. In particular, CD serves as initiator for a ring-opening-polymerization of PCL affording pendant side chains with merely a few monomer unit lengths that foster enhanced lithium ion transport, as mediated by well-defined lamellar morphology of the PCL side chains. An impressive ionic conductivity of 1 mS cm⁻¹ of the solid polymer electrolyte at 60 °C and more than 0.1 mS cm^-1 at room temperature in addition to a superior oxidative electrochemical stability of up to 4.7 V vs. Li/Li⁺ allows for robust galvanostatic cycling in LiFePO₄|Li cells, even at reduced temperatures not accessible by commonly utilized PEO-based electrolytes. The hyperbranched polymers can be readily up-scaled and further modified, thereby demonstrating the versatility of the introduced class of solid-state polymer electrolytes, as reflected by its interfacial stability against the high-capacity Lithium metal anode.

由聚轮烷作为机械稳定的主链和接枝的聚己内酯（PCL）侧链组成的超支化聚合物用作固体聚合物电解质，可用于锂金属（LMB）和锂离子电池（LIB）。聚轮烷是从环糊精（CD）宿主分子自组装到聚环氧乙烷（PEO）链上获得的。尤其是，CD用作PCL开环聚合的引发剂，从而提供侧链侧链，而侧链侧链只有几个单体单元长度，从而促进了增强的锂离子运输，这是由PCL侧链的明确层状形态所介导的。固态聚合物电解质在60°C时的离子电导率令人印象深刻，为1 mS cm ^-1，大于0.1 mS cm ^-1 与Li / Li ⁺相比，在高达4.7 V的优异氧化电化学稳定性之外，在室温下，即使在通常使用的基于PEO的电解质无法达到的降低温度下，LiFePO ₄ | Li电池也能实现稳健的恒电流循环。超支化聚合物可以容易地按比例放大并进一步改性，从而证明了引入的一类固态聚合物电解质的多功能性，这是由其对高容量锂金属阳极的界面稳定性所反映的。