1-Butyl-1-methylpyrrolidinium bis(fluorosulfonyl)imide, CAS: 1057745-51-3

Key Applications

Electrochemical Systems

• High‑performance electrolytes for lithium, sodium, and potassium batteries, leveraging the FSI anion’s low viscosity and high ionic conductivity.
• Electrolyte additive or co‑solvent to enhance SEI formation, widen electrochemical stability windows, and improve cycling efficiency.
• Supercapacitor electrolytes, particularly where low-temperature performance and high ionic mobility are required.
• Electrodeposition media for controlled metal plating of aluminum, magnesium, and other reactive metals.

Energy Storage R&D

• Prototype solid–liquid hybrid electrolytes for next‑generation battery chemistries.
• High-voltage cathode compatibility studies, where FSI-based ionic liquids mitigate oxidative degradation.
• Thermal stability evaluations in advanced cell designs due to the cation’s resistance to decomposition.

Catalysis and Synthesis

• Non-volatile reaction medium for organometallic and Lewis-acid catalyzed transformations.
• Selective dissolution environment for metal salts and complexes, enabling tunable reaction kinetics.
• Green solvent replacement in processes requiring low vapor pressure and high chemical stability.

Materials Science

• Polymer electrolyte formulation, including incorporation into ion-conductive polymer matrices.
• Surface modification and functional coatings, where ionic liquids act as templating or structuring agents.
• Nanomaterial dispersion, providing stable, charge-balanced environments for nanoparticles and conductive fillers.

Thermal and Transport Applications

• Heat-transfer and thermal management fluids in niche systems requiring non-flammability and electrochemical inertness.
• Lubrication research, particularly boundary lubrication where ionic liquids form robust interfacial films.

Analytical and Separation Science

• Extraction and separation media for metal ions, fluorinated species, and hydrophobic organics.
• Electroanalytical studies, including reference electrolyte environments for voltammetry and impedance spectroscopy.

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