Lithium Bis(trifluoromethanesulfonyl)imide (LiTFSI, CAS No. 90076-65-6) is a high-performance lithium salt electrolyte material widely used in lithium-ion batteries, solid-state batteries, polymer electrolytes, perovskite solar cells, and advanced electrochemical energy storage research. LiTFSI is recognized as one of the most important lithium salts due to its high ionic conductivity, excellent electrochemical stability, low lattice energy, and good compatibility with various electrolyte systems.
Compared with traditional lithium salts such as LiPF₆, LiTFSI exhibits superior thermal stability and moisture resistance, making it a preferred electrolyte component for next-generation lithium batteries and solid-state energy storage systems. It is commonly used in liquid electrolytes, polymer electrolytes, gel electrolytes, and lithium-ion conducting materials.
| Property | Value |
|---|---|
| Chemical Name | Lithium Bis(trifluoromethanesulfonyl)imide |
| Abbreviation | LiTFSI |
| CAS Number | 90076-65-6 |
| Molecular Formula | C₂F₆LiNO₄S₂ |
| Molecular Weight | 287.08 g/mol |
| Appearance | White hygroscopic powder |
| Solubility | Soluble in water and polar solvents |
| Melting Point | Approximately 234–238°C |
| Storage | Dry environment, inert atmosphere recommended |
LiTFSI possesses several important properties:
LiTFSI is widely used as a lithium salt component in advanced battery electrolyte systems.
Typical applications include:
LiTFSI provides mobile lithium ions and contributes to improved electrolyte stability for next-generation battery technologies.
LiTFSI is one of the most commonly studied lithium salts for polymer solid electrolytes.
Typical applications include:
In polymer electrolyte systems, LiTFSI interacts with polymer chains such as Polyethylene Oxide (PEO) through lithium-ion coordination, enabling ionic transport.
LiTFSI is frequently used in lithium metal battery studies due to its excellent electrochemical properties.
Typical applications include:
LiTFSI is widely used as a dopant/additive in hole transport materials for perovskite photovoltaic devices.
Typical applications include:
LiTFSI is commonly incorporated into Spiro-OMeTAD-based hole transport layers to improve conductivity and device performance.
LiTFSI is an important component in polymer-based ionic conducting materials.
Typical applications include:
Common systems:
LiTFSI-derived ionic systems are studied for advanced electrochemical applications.
Typical applications include:
| Parameter | Recommended Conditions |
|---|---|
| Storage Temperature | Room temperature |
| Atmosphere | Dry inert atmosphere recommended |
| Moisture Protection | Required |
| Solvent Compatibility | Carbonates, ethers, polar solvents |
| Handling | Avoid prolonged exposure to air |
Lithium Bis(trifluoromethanesulfonyl)imide (LiTFSI) is a lithium salt widely used as an electrolyte material in lithium batteries, solid-state electrolytes, and photovoltaic research.
LiTFSI provides highly mobile lithium ions and offers excellent thermal and electrochemical stability, making it suitable for advanced electrolyte systems.
Compared with LiPF₆, LiTFSI generally shows:
However, LiPF₆ remains widely used in commercial lithium-ion battery electrolytes due to cost and established manufacturing processes.
LiTFSI can dissolve in PEO through coordination between lithium ions and ether oxygen atoms, forming lithium-ion conducting polymer electrolytes for solid-state battery research.
Yes. LiTFSI is commonly used as a dopant for Spiro-OMeTAD hole transport layers to improve conductivity and charge transport properties.
LiTFSI should be stored in a sealed container under dry conditions and protected from moisture exposure.
Yes. This product is supplied for laboratory research, battery material development, photovoltaic research, analytical applications, and industrial R&D use only.
