Lithium bis(fluorosulfony)imide

Synonyms：LiFSI; Lithium bis(fluorosulfonyl)amide; Imidodisulfuryl fluoride, lithium salt

CAS No.：171611-11-3

EINECS No.：686-526-7

Molecular Formula：F₂NO₄S₂.Li

Molecular Weight：187.06

Structure Formula：
                                

Standard：

Items	Specifications
Appearance	White or off white powder
Purity	≥99.9%
Free acid (as HF)	≤100ppm
Water (K.F.)	≤100ppm
Floride (F-)	≤50ppm
Sulfate (SO42-)	≤50ppm
Chloride (Cl-)	≤10ppm
Fe	≤2ppm
K	≤5ppm
Na	≤10ppm
Ca	≤2ppm

Characteristics：Lithium bis(fluorosulfony)imide is a white powder. It has the advantages of high stability (no decomposition below 200℃), excellent low temperature performance, good hydrolysis stability and more friendly environment.

Uses：Lithium difluorosulfonimide (LiFSI) is mainly used as an electrolyte additive for lithium-ion batteries, which can effectively reduce the resistance of the SEI layer formed on the surface of the anode and cathode at low temperatures, reduce the capacity loss of lithium batteries during placement, and thereby improve the battery capacity and electrochemical performance. The defect of this product is that it is easy to corrode aluminum collector fluid, but another additive LiBOB can be added to the electrolytic liquid system to effectively inhibit the corrosion effect of LiFSI on aluminum foil, and LiFSI can significantly reduce the high impedance of LiBOB. Therefore, the LiFSI/LiBOB composite additive can significantly improve the rate performance and cycle performance of lithium-ion batteries. It can also be used as a primary battery electrolyte, polymerization reaction catalyst, antistatic agent.

Storage：Store in a well-closed container. Store in a cool, dry and well-ventilated warehouse. The recommend storage temperature is below 35℃.

Packing：5kg HDEP bottle, 80kg stainless steel drum