Ionic liquids thermodynamically compatible with Li metal are very promising for applications to rechargeable lithium batteries. 1-methyl-3-propylpyrrolidinium bis(trifluoromethanesulfonyl)imide (P(13)TFSI) is screened out as a particularly promising ionic liquid in this study. Dimensionally stable, elastic, flexible, nonvolatile polymer gel electrolytes (PGEs) with high electrochemical stabilities, high ionic conductivities and other desirable properties have been synthesized by dissolving Li imide salt (LiTFSI) in P(13)TFSI ionic liquid and then mixing the electrolyte solution with poly(vinylidene-co-hexafluoropropylene) (PVDF-HFP) copolymer. Adding small amounts of ethylene carbonate to the polymer gel electrolytes dramatically improves the ionic conductivity, net Li ion transport concentration, and Li ion transport kinetics of these electrolytes. They are thus favorable and offer good prospects in the application to rechargeable Li batteries including open systems like Li/air batteries, as well as more "conventional" rechargeable lithium and lithium ion batteries.

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基于离子液体/PVDF-HFP 混合物的锂离子导电聚合物凝胶电解质

与锂金属热力学兼容的离子液体非常有希望用于可充电锂电池。1-甲基-3-丙基吡咯烷鎓双（三氟甲磺酰基）亚胺（P（13）TFSI）在本研究中被筛选为一种特别有前途的离子液体。通过在 P(13)TFSI 离子液体中溶解锂亚胺盐 (LiTFSI)，然后混合电解质，合成了尺寸稳定、弹性、柔性、非挥发性聚合物凝胶电解质 (PGE)，具有高电化学稳定性、高离子电导率和其他理想特性聚（亚乙烯基-共-六氟丙烯）（PVDF-HFP）共聚物的溶液。在聚合物凝胶电解质中加入少量碳酸亚乙酯可显着提高离子电导率、净锂离子传输浓度、这些电解质的锂离子传输动力学。因此，它们在可充电锂电池（包括锂/空气电池等开放系统）以及更“常规”的可充电锂和锂离子电池的应用中具有良好的应用前景。