Triethylammonium bis(trifluoromethylsulfonyl)imide, CAS: 192998-66-6

Key Applications:

Electrochemical Systems

• Employed as a proton‑conducting ionic liquid component in electrochemical devices requiring stable, non‑volatile electrolytes.
• Supports high‑temperature operation due to the thermal robustness of the TFSI anion.
• Used in protic ionic liquid electrolytes for redox‑flow systems, electrochemical capacitors, and specialized proton‑exchange environments.

Battery and Energy Storage Research

• Serves as a model protic ionic liquid for studying proton mobility, ion‑pairing, and transport mechanisms in next‑generation energy storage materials.
• Incorporated into electrolyte blends to tune viscosity, ionic conductivity, and electrochemical window.
• Evaluated in solid–liquid hybrid electrolytes where low volatility and high chemical stability are required.

Catalysis and Organic Synthesis

• Functions as a non‑nucleophilic, thermally stable medium for acid‑catalyzed transformations.
• Useful in Brønsted acid catalysis where controlled proton availability is needed without introducing water or conventional mineral acids.
• Provides a tunable ionic environment for selective transformations, including alkylations, rearrangements, and condensation reactions.

Materials Science and Polymer Processing

• Acts as a plasticizing or ion‑conducting additive in polymer matrices, particularly for proton‑conducting or antistatic materials.
• Utilized in the preparation of ionogels and polymer–ionic liquid composites with enhanced mechanical and thermal properties.
• Supports thin‑film fabrication where low vapor pressure and high thermal stability are advantageous.

Separation Science and Extraction

• Applied in biphasic extraction systems where hydrophobic ionic liquids enable selective partitioning of organic or organometallic species.
• Suitable for metal ion extraction studies involving soft, weakly coordinating anions such as TFSI.
• Used in solvent systems requiring low miscibility with water and high chemical inertness.

Spectroscopy and Fundamental Studies

• Serves as a reference protic ionic liquid for NMR, IR, and Raman studies focused on hydrogen bonding, ion pairing, and proton transfer dynamics.
• Enables systematic investigation of structure–property relationships in ammonium‑based ionic liquids.

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