1-Methyl-1-propylpyrrolidinium bis(trifluoromethylsulfonyl)imide, CAS: 223437-05-6

Key Applications:

1. Energy Storage & Electrochemistry

• Lithium‑ion and sodium‑ion electrolytes 

Enhances ionic conductivity and electrochemical stability in high‑voltage systems due to the TFSI anion’s wide electrochemical window.

• Supercapacitor electrolytes 

Supports high capacitance retention and stable cycling under elevated temperatures.

• Redox‑flow battery media 

Provides low viscosity and high ion mobility, improving charge–discharge efficiency.

2. Materials Science & Advanced Manufacturing

• Polymer electrolyte formulation 

Acts as a plasticizing ionic liquid for PVDF, PEO, and other polymer matrices, improving flexibility and ionic transport.

• Ionic‑liquid‑based gels and membranes 

Used in ion‑selective membranes, actuators, and soft‑robotics components.

• Surface modification and coatings 

Serves as a non‑volatile, thermally stable medium for functionalizing metal oxides, carbon materials, and nanostructured surfaces.

3. Thermal & Chemical Processing

• Heat‑transfer and thermal‑management fluids 

High thermal stability and low vapor pressure make it suitable for closed‑loop systems.

• Solvent for high‑temperature reactions 

Supports catalysis and organometallic transformations requiring inert, non‑volatile media.

4. Separation, Extraction & Purification

• Selective extraction of metal ions 

Effective for rare‑earth, transition‑metal, and actinide separations due to tunable solvation behavior.

• CO₂ capture and gas absorption 

TFSI‑based ionic liquids exhibit favorable solubility profiles for acid gases.

5.  Electronics & Optoelectronics

• Electrolytes for dye‑sensitized solar cells (DSSCs) 

Provides stable ionic conductivity and low volatility for long‑term device performance.

• Electrochemical sensors 

Used as a stable ionic medium for amperometric and potentiometric sensing platforms.

6.  General Advantages (Colorless Grade)

• High purity and optical clarity support spectroscopic, photochemical, and analytical applications.
• Colorless profile is ideal for materials characterization workflows where background absorption must be minimized.

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