离子液体是液体中的盐。在某些情况下，该术语仅限于熔点低于某一任意温度的盐，如100°C(212°F)。普通液体如水和汽油主要由电中性分子组成，而离子液体主要由离子和短寿命的离子对组成。这些物质被称为液体电解质、离子熔体、离子液体、熔盐、液体盐或离子玻璃。它们被称为“未来的溶剂”和“设计溶剂”。离子液体被描述为具有许多潜在的应用。它们是强大的溶剂和导电流体（电解质）。在近环境温度下为液体的盐对电池应用很重要，并且由于其极低的蒸汽压力而被认为是密封剂。
1-Butylpyridin-1-ium hexafluorophosphate(V)
1-Butylpyridin-1-ium tetrafluoroborate
1-Butyl-3-methyl-1H-imidazol-3-ium hexafluorophosphate(V)
1-ethyl-3-methylimidazolium bis((trifluoromethyl)sulfonyl)imide
1-Ethyl-3-methylimidazolium ethylsulfate
1-Ethyl-3-methyl-1H-imidazol-3-ium hexafluorophosphate(V)
1-Ethyl-3-methylimidazolium iodide
1-Ethyl-3-methyl-1H-imidazol-3-ium methyl sulfate
1-Ethyl-3-methyl-1H-imidazol-3-ium 4-methylbenzenesulfonate
1-Ethyl-3-methyl-1H-imidazol-3-ium tetrafluoroborate
1-Ethyl-3-methylimidazolium trifluoromethanesulfonate
1,3-Dimethyl-1H-imidazol-3-ium methyl sulfate
Dodecyl trimethyl ammonium bromide
Trimethylstearylammonium Chloride
4-Ethyl-4-methylmorpholin-4-ium bromide
3-Butyl-1-methyl-1H-imidazol-3-ium chloride
1-Hexyl-3-methylimidazolium bromide
1-Ethyl-3-methyl-1H-imidazol-3-ium chloride
1-Butyl-4-methylpyridinium Chloride
1-Methyl-3-propyl-1H-imidazol-3-ium iodide
1-Ethyl-3-methylimidazolium Acetate
1-Hexyl-3-methylimidazolium chloride
1-Butyl-3-methylimidazolium Trifluoromethanesulfonate
1-Hexyl-3-methylimidazolium tetrafluoroborate
1-Octyl-3-methylimidazolium tetrafluoroborate
1-Octyl-3-methylimidazolium hexafluorophosphate
3-Butyl-1,2-dimethyl-1H-imidazol-3-ium bis((trifluoromethyl)sulfonyl)amide
1-Butyl-4-methylpyridinium Hexafluorophosphate
1-Methyl-3-n-octylimidazolium Trifluoromethanesulfonate
