Lithium Bis(trifluoromethanesulfonyl)imide(LiTFSI),Battery Grade 500g

Lithium Bis(trifluoromethanesulfonyl)imide (LiTFSI), Battery Grade 500g

Chemical Name: Lithium Bis(trifluoromethanesulfonyl)imide
CAS Number: 90076-65-6
Product Code: EL90076-65-6
Grade: Battery Grade
Brand: Xnergy

Product Introduction

Lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) is a highly stable lithium salt distinguished by its large, charge-delocalized TFSI⁻ anion and exceptional thermal and electrochemical stability. Unlike LiPF₆, LiTFSI does not decompose in the presence of trace moisture to generate HF, making it significantly easier to handle. However, TFSI⁻ corrodes aluminum current collectors at voltages above ~3.7 V vs. Li/Li⁺, which limits its use in conventional carbonate-based cells with Al cathode foil. LiTFSI is the preferred salt for solid-state electrolytes, ionic liquid electrolytes, polymer electrolytes (PEO/LiTFSI), and gel polymer systems where Al corrosion is not an issue. Xnergy supplies battery-grade LiTFSI for solid-state and advanced electrolyte research.

Key Features

• Exceptional thermal stability — TFSI⁻ anion is stable well above 300°C; no HF generation in the presence of moisture
• Wide electrochemical stability window — suitable for high-voltage solid-state and ionic liquid electrolyte systems
• High ionic conductivity in polymer systems — widely used in PEO/LiTFSI solid polymer electrolytes and gel electrolytes
• Charge-delocalized anion — promotes high Li⁺ dissociation and transference in low-polarity matrices
• Purity ≥99% / H₂O ≤10 ppm / Acid ≤10 ppm — battery-grade quality for solid-state and advanced electrolyte research
• Flexible volumes — available from 500 g to bulk

Specification

Application Areas

• PEO/LiTFSI solid polymer electrolyte (SPE) preparation for solid-state batteries
• Ionic liquid electrolyte formulation (e.g., LiTFSI in Py₁₄TFSI or EMIMTFSI)
• Gel polymer electrolyte (GPE) systems with PVDF-HFP or PMMA matrices
• High-temperature lithium battery electrolyte research requiring thermal stability
• Lithium–sulfur (Li–S) ether-based electrolyte (LiTFSI/DOL:DME) preparation
• Fundamental Li⁺ solvation and transport studies in non-Al-containing cell formats

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• Browse the full Salts category.