| Identification | Back Directory | [Name]
Lithium Bis(fluorosulfonyl)imide | [CAS]
171611-11-3 | [Synonyms]
LiFSI
LiFSA
ithium Bis(fL
Li[(FSO2)2N]LiFSI
Lithium bisfluorosulfonimide
LithiuM bis(fluorosulfony)iMide
Lithium bis(fluorosulfonyl)imide
Bis(fluorosulfonyl)imide Lithium
bis (fluorosulfonyl) imine lithium
Imidodisulfuryl fluoride lithium salt
LITHIUM BIS (FLUOROSULFONYL) IMIDE/LiFSi
Imidodisulfuryl fluoride lithium salt (LiFSI)
Lithium Bis(fluorosulfonyl)imide ISO 9001：2015 REACH
LiFSI Lithium Bis(fluorosulfonyl)imide | [EINECS(EC#)]
686-526-7 | [Molecular Formula]
F2NO4S2.Li | [MDL Number]
MFCD28126786 | [MOL File]
171611-11-3.mol | [Molecular Weight]
187.072 |
| Chemical Properties | Back Directory | [Melting point ]
124-128℃ | [density ]
1.052g/cm3 at 25℃ | [vapor pressure ]
27.198-31.064Pa at 20-25℃ | [storage temp. ]
Inert atmosphere,2-8°C | [Water Solubility ]
Soluble in water | [form ]
Solid | [color ]
White to Almost white | [Major Application]
battery manufacturing | [InChI]
InChI=1S/F2NO4S2.Li/c1-8(4,5)3-9(2,6)7;/q-1;+1 | [InChIKey]
HOQSGMWVPMHPSZ-UHFFFAOYSA-N | [SMILES]
[N-](S(=O)(F)=O)S(=O)(F)=O.[Li+] | [LogP]
3 at 20℃ and pH6 | [EPA Substance Registry System]
Imidodisulfuryl fluoride, lithium salt (1:1) (171611-11-3) |
| Hazard Information | Back Directory | [Chemical Properties]
White to Almost white powder to crystal with Molecular Crystal Electrolytes with High Lithium Ion Conductivity. | [Characteristics]
Lithium bis(fluorosulfonyl)imide(LiFSI) is a important high-performance electrolyte material in new energy devices such as lithium-ion batteries and supercapacitors. It has the advantages of high stability (no decomposition below 200°C), excellent low temperature performance, good hydrolytic stability and environmental friendliness, etc., as the next generation of lithium hexafluorophosphate electrolyte lithium salt for secondary lithium ion batteries. | [Uses]
Lithium Bis(fluorosulfonyl)imide is a useful research chemical. | [Preparation]
Lithium bis(fluorosulfonyl)imide (LiFSI) was synthesized by a metathesis reaction between KFSI and LiBF4 in DMC in nearly quantitative yield, similar to the preparation of its analogue, lithium (fluorosulfonyl) (pentafluoroethanesulfonyl)imide (LiFPFSI).
DOI: https://doi.org/10.1016/j.jpowsour.2010.12.040 | [Battery Materials]
The conventional electrolytes for Li-ion batteries are based on the LiPF6 salt and carbonate solvents, lithium bis(fluorosulfonyl)imide (LiFSI) is an interesting candidate. LiFSI has an excellent solubility, and by use of concentrated electrolytes, corrosion of the aluminium current collector on the cathode side can be avoided[1]. | [References]
[1] Asheim, K., Wagner, N. P., Vullum, P. E., Foss, C. E. L., Mæhlen, J. P., & Svensson, A. M. (2025). Effect of Concentration of Lithium Bis(fluorosulfonyl)imide on the Performance of Silicon Anodes for Li-Ion Batteries. Electrochemical Science Advances, 6 1. https://doi.org/10.1002/elsa.70009
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