933961

1,1,2,2-Tetrafluoroethyl 2,2,3,3-tetrafluoropropylether

≥99%, <=100 ppm acid, battery grade

• Synonym(s): 1,1,2,2-Tetrafluoro-3-(1,1,2,2-tetrafluoroethoxy)propane, HFE-458, TTE
• Empirical Formula (Hill Notation): C₅H₄F₈O
• CAS Number: 16627-68-2
• Molecular Weight: 232.07
• MDL number: MFCD00155961
• UNSPSC Code: 12352100
• PubChem Substance ID: 253662261
• NACRES: NA.21

Properties

• grade: battery grade
• Quality Level: 100
• description: Application: Battery manufacturing
• assay: ≥99%
• form: liquid
• greener alternative product characteristics: Design for Energy Efficiency; Learn more about the Principles of Green Chemistry.
• sustainability: Greener Alternative Product
• impurities: ≤100 ppm Acid; ≤100 ppm Non-volatile residue; ≤750 ppm H₂O
• bp: 92 °C
• density: 1.54 g/mL

Description

General description

Our 1,1,2,2-tetrafluoroethyl 2,2,3,3-tetrafluoropropylether (TTE) is a high-purity, battery-grade fluorinated ether commonly used as an electrolyte solvent in lithium-ion batteries (LIBs). It is a clear liquid with a boiling point of 92 °C that is miscible with many polar organic solvents, including carbonates typically used in battery electrolytes. Our TTE is produced to meet the high standards of battery-grade purity, ensuring a minimum purity level of 99%, and is carefully purified to become anhydrous and acid-free, making it a reliable choice for battery applications.

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Application

1,1,2,2-Tetrafluoroethyl 2,2,3,3-tetrafluoropropylether (TTE) is a highly versatile fluorinated ether that finds its use as a co-solvent and additive in a range of battery systems, including lithium-sulfur batteries (LSBs) and lithium-ion batteries (LiBs). In LSBs, TTE plays a crucial role in reducing the solubility of intermediate lithium polysulfides, thereby preventing the polysulfide shuttle (PSS) effect and improving battery performance.[1] Recent research suggests that TTE can also lead to the formation of a compact and uniform surface layer on the lithium anode when used as an additive, which improves the efficiency and stability of Li-S batteries.[2] In LiBs, TTE acts as a cosolvent, reducing the viscosity of the electrolyte and enabling the use of lower concentrations of lithium salt without compromising ionic conductivity. Additionally, TTE has been shown to help form a stable, conductive solid electrolyte interphase (SEI) on both graphite anodes and NMC cathodes, thereby improving the overall electrochemical performance of the battery.[3]

Safety Information

• pictograms: GHS02
• signalword: Warning
• hcodes: H226
• pcodes: P210 - P233 - P240 - P241 - P242 - P243
• Hazard Classifications: Flam. Liq. 3
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 3
• flash_point_f: 80.6 °F - closed cup
• flash_point_c: 27 °C - closed cup