Lithium bis(fluorosulfonyl)imide, CAS: 171611-11-3

Key Applications

Electrolytes in Lithium Batteries

• Widely used as a lithium salt in electrolytes for lithium-ion and lithium-metal batteries.
• Offers higher ionic conductivity compared to LiPF₆, improving rate capability and low-temperature performance.
• Enhances cycling stability and reduces impedance growth in high-voltage cathode systems.
• Provides better thermal stability and hydrolytic resistance, reducing gas generation and safety risks.

Solid-State and Gel Electrolytes

• Compatible with polymer and gel electrolytes, enabling flexible and solid-state battery designs.
• Improves interfacial stability between electrodes and solid electrolytes.

High-Voltage Cathode Systems

• Supports operation with cathodes above 4.3 V, where conventional salts degrade.
• Reduces transition-metal dissolution and mitigates side reactions at elevated voltages.

Lithium Metal and Anode Protection

• Forms stable solid electrolyte interphase (SEI) layers on lithium metal and graphite anodes.
• Helps suppress dendrite growth, improving safety and cycle life in lithium-metal batteries.

Supercapacitors and Hybrid Devices

• Applied in advanced electrolytes for supercapacitors, offering high ionic mobility and wide electrochemical stability windows.
• Enables hybrid energy storage systems combining battery-like and capacitor-like behavior.

Industrial and Research Applications

• Used in research for next-generation energy storage systems, including lithium-sulfur and lithium-air batteries.
• Serves as a benchmark salt for evaluating electrolyte additives and novel solvent systems.

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