512-51-6 | Ethyl 1,1,2,2-tetrafluoroethyl ether

CAS:512-51-6 | Ethyl 1,1,2,2-tetrafluoroethyl ether ,Description

Ethyl 1,1,2,2-tetrafluoroethyl ether, also known as ethyl 4-fluoro-1-ethoxy-2-fluoroethane, is a colorless, volatile, nonflammable, and thermally stable compound with a molecular weight of 152.06 g/mol. It is a fluorinated ether with a wide range of applications in the chemical and pharmaceutical industries. It is used as a solvent, a reagent in organic synthesis, and a propellant for aerosol sprays. It is also used as a fuel component in rocket propulsion systems. 
 

Scientific Research Applications

Application in Lithium/Sulfur Batteries

Ethyl 1,1,2,2-tetrafluoroethyl ether (ETFE) has been explored as an electrolyte solvent in lithium/sulfur batteries. Research by Lu et al. (2015) demonstrates that ETFE enhances the stability of the electrolyte/anode interface and improves electrochemical performances, including cycling, rate, and self-discharging. The presence of ETFE in the electrolyte was found to modify the surface composition and structure of metallic lithium, forming a protective film and reducing the dissolution of polysulfides.

Role in Rechargeable Li-S Batteries

ETFE has been incorporated in novel electrolytes for rechargeable lithiumsulfur batteries. A study by Lu et al. (2021) found that the addition of ETFE to the electrolyte significantly impacts ionic conduction and reduces polysulfide solubility. This leads to increased reversible capacity, improved cycle stability, and enhanced rate capability. ETF

E's synergistic function with other additives like LiFSI results in a modified and stabilized lithium surface, which is crucial for the overall performance of the battery.

Application in Gas Separation Membranes

ETFE has also found application in gas transport and separation technologies. Rabiee et al. (2015) investigated poly(ether-b-amide6)/[Emim][BF4] gel membranes for CO2/light gases separation, where ETFE demonstrated significant improvements in gas permeation, particularly CO2, and enhanced ideal selectivity due to its high solubility selectivity.

Use in Fluorination Reactions

ETFE has been identified as a selective fluoride donor in halogen-exchange reactions. Rozov et al. (1998) found that ethyl 1,1,2,2-tetrafluoroethylether is effective in treatment with antimony pentachloride, resulting in monofluorinated products. This highlights its potential in synthetic chemistry for specific fluorination processes.

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