Sigma-Aldrich 1,1,2,2-Tetrafluoroethyl 2,2,2-trifluoroethyl ether，≥99.5%，无水，酸<=100 ppm，电池级

产品概述

1，1，2，2-四氟乙基2，2，2-三氟乙基醚（TFTFE）是一种氟化醚，广泛用作各种电池技术中的电解质溶剂和稀释剂。TFTFE具有低粘度，低凝固点，（-94 °C lit.），低介电常数（~6.7）和高电化学稳定性，使其成为用于锂离子电池、锂硫电池、和其他电池系统。TFTFE可与许多极性有机溶剂混溶，包括电池电解质中常用的碳酸盐。我们的TFTFE最低纯度为99%，不含酸性杂质，是关键电池应用的可靠安全解决方案。

应用领域

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.PMID 30013215 Because of its stability and low viscosity, TFTFE is commonly added in localized high-concentration electrolytes (LHCE) as a diluent and flame-retardant.PMID 33655631 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.

技术规格