1-Butyl-3-methylimidazolium bis(fluorosulfonyl)imide, CAS: 1235234-58-8

Key Applications:

This product has application in the following:

• Electrochemistry & Energy Storage – Applied as a high‑performance electrolyte in lithium‑ion batteries, supercapacitors, and fuel cells. The FSI⁻ anion provides excellent ionic conductivity and wide electrochemical stability.
• Polymer Electrolytes – Incorporated into PEO and other polymer matrices, where the imidazolium cation and FSI⁻ anion enhance lithium ion transport and mechanical flexibility.
• Ionic Liquid Benchmarking – Studied as a reference ionic liquid for conductivity, viscosity, and density, due to the FSI⁻ anion’s lower viscosity compared to TFSI⁻.
• Catalysis & Reaction Medium – Functions as a polar, non‑volatile solvent that improves selectivity and efficiency in catalytic and synthetic reactions.
• Gas Absorption & Separation – Investigated for CO₂ capture and selective gas separation, leveraging weakly coordinating FSI⁻ anions and hydrogen bonding interactions.
• Solvent Extraction – Used in metal ion extraction and separation processes, where ionic interactions enable selective recovery of valuable metals.
• Thermophysical Properties Research – Explored for density, viscosity, conductivity, and thermal stability, providing critical data for modeling ionic liquid behavior in industrial and energy applications.
• Green Chemistry & Sustainability – Valued as a recyclable ionic liquid with low volatility and high thermal stability, supporting sustainable solvent systems.

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