1,3-Diethylimidazolium bis(trifluoromethylsulfonyl)imide, CAS: 174899-88-8

Key Applications:

Electrochemical Systems

• Serves as a high‑conductivity ionic liquid electrolyte for lithium, sodium, and multivalent metal batteries.
• Used as a stable medium for redox‑active species in flow batteries and electrochemical capacitors.
• Supports wide electrochemical windows, enabling high‑voltage cell designs and improved cycling stability.
• Functions as a solvent or co‑solvent for electrodeposition of metals and alloys under water‑free conditions.

Thermal and Chemical Process Media

• Employed as a heat‑transfer and thermal‑storage fluid due to its low volatility and thermal robustness.
• Acts as a reaction medium for high‑temperature or moisture‑sensitive transformations, including catalytic hydrogenation, alkylation, and polymerization.
• Provides a tunable environment for organometallic catalysis, enhancing selectivity and catalyst lifetime.

Separation Science and Extraction

• Utilized in liquid–liquid extraction of metal ions, particularly rare‑earth and transition‑metal species, where TFSI– anion hydrophobicity improves phase separation.
• Supports gas absorption and separation processes, including CO₂ capture and selective solvation of sulfur‑containing gases.
• Applied in chromatographic stationary phases and supported ionic liquid membranes for enhanced selectivity.

Materials Science and Polymer Engineering

• Incorporated as a plasticizer or ionic mobility enhancer in polymer electrolytes, ion gels, and block‑copolymer systems.
• Used to tune morphology and conductivity in ionomer membranes and advanced dielectric materials.
• Serves as a processing aid for nanoparticle dispersion, improving stability and surface functionalization.

Surface Science and Tribology

• Functions as a boundary lubricant for metal and ceramic interfaces, offering low wear and friction under extreme conditions.
• Forms stable, non‑volatile surface films that resist oxidative degradation and moisture intrusion.

Analytical and Spectroscopic Applications

• Provides a non‑volatile, low‑background matrix for mass spectrometry and electroanalytical studies.
• Used as a calibration or reference medium in conductivity and viscosity benchmarking of ionic liquids.

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