Sodium Bis(trifluoromethanesulfonyl)imide(NaTFSI),Battery Grade 500g

Sodium Bis(trifluoromethanesulfonyl)imide (NaTFSI), Battery Grade 500g

Chemical Name: Sodium Bis(trifluoromethanesulfonyl)imide
CAS Number: 91742-21-1
Product Code: EL91742-21-1
Grade: Battery Grade
Brand: Xnergy

Product Introduction

Sodium bis(trifluoromethanesulfonyl)imide (NaTFSI) is the sodium-ion analog of LiTFSI, offering exceptional thermal stability and moisture tolerance for Na-ion battery research in demanding environments. The bulky, charge-delocalized TFSI⁻ anion suppresses ion pairing and supports high Na⁺ mobility in polymer and ionic liquid electrolyte matrices. Like LiTFSI, NaTFSI corrodes aluminum current collectors above ~3.7 V and is therefore best suited to cell formats using stainless steel or Ti current collectors, ionic liquid electrolytes, or solid polymer systems. NaTFSI is an important reference salt for fundamental Na⁺ transport studies and Na-ion solid-state electrolyte research. Xnergy supplies battery-grade NaTFSI for Na-ion and solid-state research applications.

Key Features

• Exceptional thermal stability — TFSI⁻ anion stable above 300°C; no HF generation; more moisture-tolerant than NaPF₆
• High Na⁺ dissociation — charge-delocalized TFSI⁻ promotes complete salt dissolution and high transference in polymer systems
• Solid polymer electrolyte compatible — widely used in PEO/NaTFSI and composite Na-ion polymer electrolytes
• Ionic liquid electrolyte compatible — suitable for NaTFSI/Py₁₄TFSI and related ionic liquid-based Na-ion systems
• Purity ≥99% / H₂O ≤10 ppm / Acid ≤10 ppm — battery-grade quality for Na-ion solid-state and advanced electrolyte research
• Flexible volumes — available from 500 g to bulk quantities

Specification

Application Areas

• PEO/NaTFSI solid polymer electrolyte preparation for Na-ion solid-state batteries
• Ionic liquid electrolyte formulation (NaTFSI in Py₁₄TFSI or EMIMTFSI)
• Na-ion gel polymer electrolyte (GPE) systems
• Fundamental Na⁺ transport number and conductivity measurements in non-Al cell formats
• High-temperature Na-ion electrolyte research requiring thermal stability above 100°C
• Comparative salt study: NaTFSI vs. NaFSI vs. NaPF₆ for Na-ion polymer electrolytes

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• Browse the full Salts category.