Butyltrimethylammonium bis(trifluoromethylsulfonyl)imide, CAS: 258273-75-5

Key Applications:

Electrochemical Systems

• Serves as a high‑stability supporting electrolyte in non‑aqueous electrochemical cells, including lithium, sodium, and multivalent metal systems.
• Enhances ionic conductivity and suppresses parasitic reactions in high‑voltage environments due to the TFSI anion’s oxidative robustness.
• Used in electrodeposition studies where controlled ion mobility and low water content are essential.

Battery and Energy Storage Research

• Functions as an additive or co‑salt in electrolyte formulations for next‑generation batteries, improving SEI formation and cycling stability.
• Supports research on ionic‑liquid‑based electrolytes for solid‑state and hybrid solid–liquid systems.
• Applied in redox‑flow battery development where wide electrochemical windows and thermal stability are required.

Materials Science and Polymer Processing

• Acts as a dopant or ionic modifier in polymer matrices, enabling tunable conductivity in ion gels, block copolymers, and elastomeric materials.
• Used in the preparation of polymer electrolytes and membranes with enhanced mechanical and electrochemical performance.
• Facilitates ion‑exchange processes in advanced materials where hydrophobic, weakly coordinating anions are advantageous.

Catalysis and Synthesis

• Employed as a phase‑transfer or ionic‑medium component in organic synthesis, particularly under low‑volatility or solvent‑free conditions.
• Supports catalytic systems that benefit from the TFSI anion’s non‑coordinating nature, improving catalyst stability and turnover.
• Useful in halide‑free reaction environments where minimal nucleophilicity is required.

Spectroscopy and Fundamental Studies

• Provides a well‑defined cation–anion pair for benchmarking ion transport, solvation, and interfacial behavior in ionic liquid research.
• Used in vibrational, NMR, and dielectric spectroscopy to study ion pairing and dynamic relaxation processes.
• Serves as a model salt for computational and theoretical investigations of ionic liquids with quaternary ammonium cations.

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