Polymeric ionic liquids (PILs) not only have the unique properties of ionic liquid, but also possess diverse mechanical properties of polymers. Due to their safety and conductivity, PILs-based gel polymer electrolytes (GPEs) are the promising candidates for the design of the devices. Here, we reported a facile approach to synthesize novel star-shaped GPE (named PIL–POSS–Li GPE) based on 1-vinyl-3-butylimidazolium hexafluorophosphate ionic liquid, octavinyl polyhedral oligomeric silsesquioxane (POSS) and LiPF6 solution in one step via gamma-ray radiation. Compared with PIL–Li GPE without POSS, the incorporation of POSS into the PIL–Li GPE can improve properties of PIL–POSS–Li GPE due to the formation of a star-shaped structure, and the as-prepared PIL–POSS–Li GPE showed excellent compressive strength of 1617 kPa, high fracture compression stain of 79% and high ionic conductivity of 3.88 mS cm−1 at 25 °C. What is more, the PIL–POSS–Li supercapacitor (SC) showed better electrochemical performance than PIL–Li SC.

中文翻译：

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用于超级电容器的具有高离子电导率和机械性能的新型星形聚合物离子液体-POSS凝胶电解质的一步辐射合成

聚合物离子液体（PILs）不仅具有离子液体的独特性能，而且还具有聚合物的多种机械性能。由于其安全性和导电性，基于 PIL 的凝胶聚合物电解质 (GPE) 是设备设计的有希望的候选者。在这里，我们报道了一种基于 1-乙烯基-3-丁基咪唑鎓六氟磷酸离子液体、八乙烯基多面体低聚倍半硅氧烷 (POSS) 和 LiPF6 溶液一步合成新型星形 GPE（命名为 PIL-POSS-Li GPE）的简便方法。伽马射线辐射。与没有POSS的PIL-Li GPE相比，将POSS掺入PIL-Li GPE中可以改善PIL-POSS-Li GPE的性能，因为形成了星形结构，所制备的PIL-POSS-Li GPE 表现出优异的抗压强度 1617 kPa，79% 的高断裂压缩染色和 3.88 mS cm-1 在 25 °C 下的高离子电导率。更重要的是，PIL-POSS-Li 超级电容器（SC）表现出比 PIL-Li SC 更好的电化学性能。