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-Butyl-4-methylpyridinium Hexafluorophosphate
1-Methyl-3-n-octylimidazolium Trifluoromethanesulfonate
1-Hexyl-3-methylimidazolium Trifluoromethanesulfonate
1-Methyl-3-octylimidazolium chloride
1-Butyl-2,3-dimethylimidazolium Trifluoromethanesulfonate
N-butyl-N-methyl-piperidinium bromide
3-Hexadecyl-1-methyl-1H-imidazol-3-ium bromide
1-Ethylpyridin-1-ium bromide
2-hydroxy-N,N,N-trimethylethanaminium chloride
Tetraethylammonium chloride
1-Butyl-3-methylpyridin-1-ium hexafluorophosphate(V)
Benzyl triethylammonium chloride
1-propenyl-3-methylimidazolium bromide
1-Allyl-3-methylimidazolium bis((trifluoromethyl)sulfonyl)imide
1-Decyl-3-methyl-1H-imidazol-3-ium bis((trifluoromethyl)sulfonyl)amide
1-(2’-hydroxylethyl)-3-methylimidazolium bis((trifluoromethyl)sulfonyl)imide
1-(2’-hydroxylethyl)-3-methylimidazolium chloride
1,3-Dimethylimidazolium Bis(trifluoromethanesulfonyl)imide
1,3-dimethylimidazolium hexafluorophosphate
3-Allyl-1-methyl-1H-imidazol-3-ium thiocyanate
1-Allyl-3-methylimidazolium tetrafluoroborate
1-butyl-3-methylimidazolium dicyanamide
1-butyl-3-methylimidazolium thiocyanate
1-carboxymethyl-3-methylimidazolium chloride
1-dodecyl-3-methylimidazolium chloride
1-ethyl-3-methylimidazolium trifluoroacetate
1-hexadecyl-3-methylimidazolium hexafluorophosphate
1-Propyl-3-methylimidazolium bis((trifluoromethyl)sulfonyl)imide
1-tetradecyl-3-methylimidazolium bromide
