The development of future energy devices that exhibit high safety, sustainability, and high energy densities to replace the currently dominant lithium-ion batteries has gained significant attention in recent years. Although the various energy devices available have different technological requirements, electrolyte formulation still remains a fundamental element of these state-of-the-art systems. Among the trending electrolyte contenders, ionic liquids, which are entirely comprised of cations and anions, provide a combination of several unique physicochemical and electrochemical properties, and exceptional safety. In this review, the fundamental properties of IL, their progress and milestones, and the directions for their future development and applications in next-generation energy devices are summarized. Each section will comprehensively review the latest progress and technology trends utilizing IL electrolytes focusing on Li-, Na-, K-ion batteries, metal anode batteries, sulfur and oxygen batteries, multivalent metal-ion batteries, and supercapacitors, with early studies mentioned where relevant. The benefits of using ionic liquid electrolytes on each system and pertinent improvements in performance are delineated in comparison to systems utilizing conventional electrolytes. Finally, prospects and challenges associated with the applications of ionic liquid electrolytes to future energy devices are also discussed.

近年来，开发具有高安全性、可持续性和高能量密度的未来能源设备以取代目前占主导地位的锂离子电池受到了广泛关注。尽管可用的各种能源设备具有不同的技术要求，但电解质配方仍然是这些最先进系统的基本要素。在热门的电解质竞争者中，完全由阳离子和阴离子组成的离子液体提供了几种独特的物理化学和电化学特性的组合，以及卓越的安全性。在这篇综述中，总结了 IL 的基本特性、进展和里程碑，以及它们在下一代能源设备中的未来发展和应用方向。每个部分将全面回顾利用IL电解质的最新进展和技术趋势，重点关注锂离子、钠离子、钾离子电池、金属阳极电池、硫氧电池、多价金属离子电池和超级电容器，并提到早期研究在哪里相关的。与使用传统电解质的系统相比，描述了在每个系统上使用离子液体电解质的好处以及性能的相关改进。最后，还讨论了与离子液体电解质在未来能源设备中的应用相关的前景和挑战。在相关的地方提到了早期研究。与使用传统电解质的系统相比，描述了在每个系统上使用离子液体电解质的好处以及性能的相关改进。最后，还讨论了与离子液体电解质在未来能源设备中的应用相关的前景和挑战。在相关的地方提到了早期研究。与使用传统电解质的系统相比，描述了在每个系统上使用离子液体电解质的好处以及性能的相关改进。最后，还讨论了与离子液体电解质在未来能源设备中的应用相关的前景和挑战。