Lithium bis(trifluoromethane)sulfonimide (LiTFSI) is a hydrophilic organic salt that has many uses in electric and electronic systems. Its bis(trifluoromethane)sulfonimide anion, often referred to as bistriflimide, has the useful property of coordinating weakly with cations.

LiTFSI是一種親水性有機鹽，在電氣和電子系統中有許多用途。其雙（三氟甲烷）磺酰亞胺陰離子，通常稱為雙氟利酰亞胺，具有與陽離子弱配位的有用特性。

LiTFSI ‘s other important property is its extremely high solubility in water: 21 molal or ≈6 kg/L of solution. Because of its solubility, it has been explored as an electrolyte for lithium-ion batteries, solar cells, and similar applications since at least the late 1980s. LiTFSI is a safer material than the formerly used salt, lithium hexafluorophosphate (LiPF₆).

LiTFSI的另一個重要特性是其在水中的溶解度極高：21摩爾或≈6 kg/L溶液。由于其溶解性，至少自 1980 年代后期以來，它就已被探索為鋰離子電池、太陽能電池和類似應用的電解質。LiTFSI是一種比以前使用的鹽六氟磷酸鋰（LiPF6）更安全的材料。