1,3-Dimethylimidazolium bis(trifluoromethylsulfonyl)imide, CAS: 174899-81-1

Key Applications:

Electrochemical Systems

• High‑performance electrolyte component for lithium‑ion, sodium‑ion, and magnesium‑ion batteries, where its low viscosity and high ionic conductivity support efficient ion transport.
• Used in supercapacitors and electrochemical double‑layer capacitors (EDLCs) to enhance cycling stability and widen the electrochemical window.
• Suitable for electrodeposition of reactive or air‑sensitive metals due to its thermal stability and non‑volatile nature.

Catalysis & Organic Synthesis

• Employed as a non‑coordinating reaction medium for transition‑metal catalysis, enabling improved selectivity and turnover.
• Supports acid‑catalyzed and base‑catalyzed transformations, including alkylation, esterification, and cyclization reactions.
• Utilized in biocatalysis as a co‑solvent that stabilizes enzymes and enhances substrate solubility.

Separation Science & Extraction

• Effective in liquid–liquid extraction of metal ions, especially rare‑earth and actinide species, due to the hydrophobic TFSI⁻ anion.
• Applied in gas absorption and separation, including CO₂ capture, where its tunable solvation properties improve uptake efficiency.
• Used in chromatographic stationary phases to enhance selectivity for polar and aromatic analytes.

Materials Science & Polymer Engineering

• Incorporated into polymer electrolytes and ion gels to improve mechanical flexibility and ionic transport.
• Acts as a plasticizer in high‑performance polymers, enhancing conductivity and thermal stability.
• Supports fabrication of ionic‑liquid‑based membranes for fuel cells, gas separation, and pervaporation.

Thermal & Process Engineering

• Serves as a heat‑transfer and thermal‑storage medium in high‑temperature environments due to its exceptional thermal stability.
• Used as a lubricant additive to reduce friction and wear in demanding mechanical systems.
• Functions as a stable solvent for high‑temperature or vacuum‑sensitive processes where conventional organics fail.

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