• 24 hours a day, from Monday to Sunday.
ICON
The Best Industrial

Solution Provider

ICON
Certified Company

ISO 9001:2015 Certification

Request a quote

Lithium Bis(fluorosulfonyl)imide

Lithium bis(fluorosulfonyl)imide (LiFSI) is a white powdery lithium salt commonly used as a lithium source in high-performance electrolytes for lithium-ion batteries. It has the potential to improve battery performance and safety compared to more traditional electrolytes such as lithium hexafluorophosphate (LiPF6), and has attracted attention in battery research. Alfa Chemistry offers high-quality LiFSI electrolyte. Please contact us for pricing and more information on this product.

Product Name: Lithium Bis(fluorosulfonyl)imide

CAS Number: 171611-11-3

Molecular Weight: 187.07

Basic Parameters

ItemsLithium Bis(fluorosulfonyl)imide
CatalogACSEM-BM-E005
Linear FormulaF2LiNO4S2
Purity>99.9%
MDL NumberMFCD28126786
AppearanceWhite powder
Water Content≤80 ppm
Melting Point140 °C
Vapor Pressure27.198-31.064 Pa at 20-25 °C
Thermal Decomposition>200 °C
Density1.052 g/cm3 at 25 °C
Insoluble Substance≤300 ppm
Free Acid<5 ppm
Solubility in WaterSoluble
Condition to AvoidMoisture
StorageStore under inert gas

Properties

  • Conductivity. The fluoride ions in LiFSI have strong electron-withdrawing properties, which weakens the coordination effect between anions and cations in the lithium salt, making the lithium ions more mobile, thereby improving the conductivity of the electrolyte.
  • Thermal stability. Compared to many other lithium salts, LiFSI exhibits better thermal stability, which means that in high-temperature environments, LiFSI is better able to maintain battery performance and reduce the possibility of thermal decomposition. This property is crucial when designing batteries for high-energy applications or for environments with varying temperature conditions.
  • Electrochemical stability. LiFSI excels in electrochemical stability, allowing the development of batteries that operate at higher efficiencies and higher voltages.
  • Hydrolysis resistance. LiFSI has strong hydrolysis resistance, which makes it more stable in humid environments and reduces harmful side reactions caused by hydrolysis.

Applications

LiFSI can be used as an electrolyte for primary batteries. It can also be used as a lithium-ion battery electrolyte additive in the electrolyte of rechargeable lithium batteries, which can effectively reduce the high and low temperature resistance of the solid electrolyte interface (SEI) layer formed on the surface of the electrode plate at low temperatures, and reduce the capacity loss of lithium batteries during storage, thereby providing high battery capacity and electrochemical performance.

Elevate your battery efficiency with the superior conductivity of Lithium Bis(fluorosulfonyl)imide!

Our products and services are for research use only and cannot be used for any clinical purpose.

Not finding what you're looking for?

If you do not find the product or would like to request a quote, please contact us.

Ask Your Question

Verification code