933988
1,1,2,2-Tetrafluoroethyl 2,2,2-trifluoroethyl ether
≥99.5%, anhydrous, acid <=100 ppm, battery grade
Synonyma:
1,1,2,2-tetrafluoro-1-(2,2,2-trifluoroethoxy)ethane, HFE-347, TFTFE
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About This Item
Empirický vzorec (Hillův zápis):
C4H3F7O
Číslo CAS:
Molekulová hmotnost:
200.05
Číslo enzymu podle klasifikace EK:
609-858-6
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.21
Doporučené produkty
grade
battery grade
Quality Level
assay
≥99.5%
form
liquid
greener alternative product characteristics
Design for Energy Efficiency
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sustainability
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impurities
≤100 ppm acid (HF)
≤250 ppm H2O
non-volatile residue (NVR)
≤10 ppm
bp
56 °C
mp
-91 °C (lit.)
density
1.49 g/mL
application(s)
battery manufacturing
greener alternative category
Související kategorie
General description
1,1,2,2-Tetrafluoroethyl 2,2,2-trifluoroethyl ether (TFTFE) is a fluorinated ether that finds extensive use as an electrolyte solvent and diluent in various battery technologies. TFTFE has a low viscosity, low freezing point (-94 °C lit.), low dielectric constant (~6.7), and high electrochemical stability, making it an ideal candidate for use in lithium-ion batteries, lithium-sulfur batteries, and other battery systems. TFTFE is miscible with many polar organic solvents, including carbonates typically used in battery electrolytes. With a minimum purity level of 99% and free from acid impurities, our TFTFE is a reliable and safe solution for critical battery applications.
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Application
Battery-grade 1,1,2,2-tetrafluoroethyl 2,2,2-trifluoroethyl ether (TFTFE) is a versatile co-solvent and additive for various battery systems. In lithium-metal batteries, TFTFE helps to suppress dendrites without raising the interfacial impedance. It also supports the stable cycling of NMC and lithium metal phosphate cathodes by forming a highly fluorinated interphase, which inhibits oxidation and transition metal dissolution. Because of its stability and low viscosity, TFTFE is commonly added in localized high-concentration electrolytes (LHCE) as a diluent and flame-retardant. In lithium-sulfur batteries, TFTFE plays a key role as both a polysulfide-restraining solvent and a film-forming agent, addressing the polysulfide shuttle (PSS) effect and improving battery performance. Additionally, TFTFE plays a critical role in cell systems with solvate ionic liquids (SIL) as an ionic conduction-enhancing ingredient, particularly for high-rate cycle environments. Our high-purity, anhydrous TFTFE is an ideal battery-grade additive for advanced battery technology.
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Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2
Storage Class
10 - Combustible liquids
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Osvědčení o analýze (COA)
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Již tento produkt vlastníte?
Dokumenty související s produkty, které jste v minulosti zakoupili, byly za účelem usnadnění shromážděny ve vaší Knihovně dokumentů.
Solvate ionic liquid electrolyte with 1,1,2,2-tetrafluoroethyl 2,2,2-trifluoroethyl ether as a support solvent for advanced lithium?sulfur batteries
Lu, Hai, et al.
Royal Society of Chemistry Advances, 6, 18186-18190 (2016)
Synthesis and electrochemical properties of partially fluorinated ether solvents for lithiumsingle bondsulfur battery electrolytes
Yue Zheng
Journal of Power Sources, 401, 271-277 (2018)
Jun-Fan Ding et al.
Angewandte Chemie (International ed. in English), 60(20), 11442-11447 (2021-03-04)
Lithium (Li) metal anodes hold great promise for next-generation high-energy-density batteries, while the insufficient fundamental understanding of the complex solid electrolyte interphase (SEI) is the major obstacle for the full demonstration of their potential in working batteries. The characteristics of
Xiulin Fan et al.
Nature nanotechnology, 13(8), 715-722 (2018-07-18)
Rechargeable Li-metal batteries using high-voltage cathodes can deliver the highest possible energy densities among all electrochemistries. However, the notorious reactivity of metallic lithium as well as the catalytic nature of high-voltage cathode materials largely prevents their practical application. Here, we
Application of Partially Fluorinated Ether for Improving Performance of Lithium/Sulfur Batteries
Lu, Hai, et al.
Journal of the Electrochemical Society, 162, A1460-A1460 (2015)
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