1,2-Dimethylimidazolium bis(trifluoromethylsulfonyl)imide, CAS: 353239-12-0

1. Electrolytes for High‑Performance Energy Storage

• Functions as a low‑viscosity ionic liquid electrolyte component for Li‑ion, Na‑ion, and Mg‑ion batteries.
• The TFSI⁻ anion provides wide electrochemical stability windows suitable for high‑voltage cathodes.
• Supports ionic‑liquid‑based gel polymer electrolytes requiring enhanced ion mobility.

2. Supercapacitors and Hybrid Capacitors

• Serves as a stable ionic medium for EDLCs and pseudocapacitors with high ionic conductivity and thermal stability.
• The 1,2‑dimethyl substitution reduces crystallinity, improving low‑temperature performance.

3. Solvent and Co‑solvent for Organic Synthesis

• Acts as a non‑volatile, thermally robust reaction medium for transition‑metal catalysis, C–C coupling, and heterocycle functionalization.
• The cation’s steric and electronic profile can improve selectivity in organometallic transformations.

4. Extraction and Separation Processes

• Effective in liquid–liquid extraction of metal ions due to the hydrophobic TFSI⁻ anion.
• Useful in CO₂ capture systems where imidazolium ionic liquids enhance absorption capacity and tunability.

5. Electrochemical Deposition and Surface Engineering

• Provides a stable ionic environment for metal electrodeposition, including aluminum, rare‑earth metals, and reactive alloys.
• Supports smooth, dendrite‑resistant deposition due to low water content and high thermal stability.

6. Polymer Processing and Advanced Materials

• Functions as a plasticizer or ionic dopant in conductive polymers such as PEDOT and polyaniline.
• Enhances mechanical flexibility and ionic conductivity in ionogels and polymer electrolytes.

7. Spectroscopy and Fundamental Research

• Used as a model ionic liquid for studying cation–anion interactions, solvation dynamics, and charge transport.
• The 1,2‑dimethyl substitution pattern provides a distinct benchmark for structure–property correlation studies.

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