1-Ethyl-1-methylpyrrolidinium tetrafluoroborate, CAS: 117947-85-0

Key Applications:

Electrolytes and Energy Storage

• Serves as a stable ionic liquid electrolyte component for lithium‑ion, sodium‑ion, and emerging multivalent battery systems.
• Offers wide electrochemical windows and low volatility, supporting high‑temperature and high‑voltage cell designs.
• Used in supercapacitor electrolytes to enhance ionic conductivity and thermal robustness.

Electrodeposition and Surface Engineering

• Functions as an additive or primary medium for metal electrodeposition, particularly where smooth, uniform films are required.
• Supports controlled deposition of metals such as copper, nickel, and tin in non‑aqueous environments.
• Applied in surface finishing workflows that demand low water content and high chemical stability.

Catalysis and Organic Synthesis

• Acts as a non‑volatile, thermally stable solvent for transition‑metal‑catalyzed reactions.
• Enables selective transformations in nucleophilic substitutions, oxidations, and coupling reactions under anhydrous conditions.
• Useful in biphasic catalysis where ionic liquids facilitate catalyst recovery and reuse.

Separation Science and Extraction

• Employed in liquid–liquid extraction systems for selective separation of metal ions and organic species.
• Supports chromatographic applications requiring tunable polarity and low vapor pressure.
• Utilized in solvent‑free or reduced‑solvent purification workflows.

Materials Processing and Polymer Science

• Serves as a processing aid for polymer dissolution, dispersion, and ion transport modification.
• Integrated into polymer electrolytes and ion‑conducting films to improve mechanical flexibility and conductivity.
• Used in formulation of specialty coatings requiring electrochemical stability.

Electrochemical Devices and Sensors

• Provides a stable medium for redox‑active species in electrochemical sensors.
• Enhances signal stability in high‑temperature or moisture‑sensitive sensing environments.
• Supports development of ionic‑liquid‑based reference systems.

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