Electrochemical Materials and Energy Group, Tyndall National Institute, University College Cork, Lee Maltings, T12 R5CP Cork, Ireland.
Molecules. 2020 Dec 18;25(24):6002. doi: 10.3390/molecules25246002.
Ionic liquids are potential alternative electrolytes to the more conventional solid-state options under investigation for future energy storage solutions. This review addresses the utilization of IL electrolytes in energy storage devices, particularly pyrrolidinium-based ILs. These ILs offer favorable properties, such as high ionic conductivity and the potential for high power drain, low volatility and wide electrochemical stability windows (ESW). The cation/anion combination utilized significantly influences their physical and electrochemical properties, therefore a thorough discussion of different combinations is outlined. Compatibility with a wide array of cathode and anode materials such as LFP, VO, Ge and Sn is exhibited, whereby thin-films and nanostructured materials are investigated for micro energy applications. Polymer gel electrolytes suitable for layer-by-layer fabrication are discussed for the various pyrrolidinium cations, and their compatibility with electrode materials assessed. Recent advancements regarding the modification of typical cations such a 1-butyl-1-methylpyrrolidinium, to produce ether-functionalized or symmetrical cations is discussed.
离子液体是未来储能解决方案中更传统的固态电解质的潜在替代品。本综述介绍了离子液体电解质在储能设备中的应用，特别是基于吡咯烷的离子液体。这些离子液体具有高离子电导率和高功率消耗潜力、低挥发性和宽电化学稳定窗口（ESW）等有利特性。所用的阳离子/阴离子组合显著影响它们的物理和电化学性质，因此，详细讨论了不同的组合。它们与各种阴极和阳极材料（如 LFP、VO、Ge 和 Sn）具有兼容性，其中研究了薄膜和纳米结构材料在微能源应用中的性能。还讨论了适用于逐层制造的各种吡咯烷阳离子的聚合物凝胶电解质，并评估了它们与电极材料的兼容性。还讨论了对典型阳离子（如 1-丁基-1-甲基吡咯烷）进行修饰以生成醚官能化或对称阳离子的最新进展。
