{"product_id":"cbesaf6dee","title":"F6DEE {1,2-Bis(2,2,2-trifluoroethoxy)ethane, \u003e99.0%} as Battery Electrolyte Co-Solvent and Additive, 5-25 g\/bottle, CBESAF6DEE","description":"\u003cp\u003eF6DEE (1,2-bis(2,2,2-trifluoroethoxy)ethane, widely known in literature as BTFE) is a symmetric, heavily fluorinated diether engineered as a high-performance co-solvent, structural diluent, and interphase-directing additive for next-generation lithium-metal and high-voltage lithium-ion batteries. By flanking a central ethylene glycol backbone with two fully fluorinated 2,2,2-trifluoroethyl groups (totaling six fluorine atoms), F6DEE achieves exceptional resistance to oxidation at the expense of moderated solvation strength compared to lower-fluorinated homologues.\u003c\/p\u003e\n\u003cp\u003eIts functional roles in electrolyte engineering are: (1) \u003cstrong\u003eLocalized High-Concentration Electrolyte (LHCE) Diluent\u003c\/strong\u003e: F6DEE is predominantly deployed as an inert or weakly interacting diluent. It expands the free-solvent volume and lowers bulk liquid viscosity, enabling rapid separator wetting and facile ionic transport while keeping concentrated salt clusters intact. (2) \u003cstrong\u003eOxidative Stability Enhancement\u003c\/strong\u003e: Because of its heavy fluorination, F6DEE exhibits superior anodic stability, effectively suppressing oxidative decomposition and electrolyte breakdown when operating high-voltage transition metal oxide cathodes.  (3) \u003cstrong\u003eAnion-Derived Solid Electrolyte Interphase (SEI) Passivation\u003c\/strong\u003e: F6DEE actively promotes the reductive decomposition of counter-anions (such as FSI- from LiFSI) alongside its own breakdown during early-stage cycling. This yields a dense, inorganic-rich Solid Electrolyte Interphase (SEI) heavily enriched with lithium fluoride (LiF) on reactive lithium metal anodes. (4) \u003cstrong\u003eMitigation of Conduction Penalties via Balancing\u003c\/strong\u003e: While high fluorination degrees maximize oxidative stability, they can restrict bulk ionic conductivity if over-utilized. Consequently, F6DEE is structurally benchmarked against lower-fluorinated ethers (like F4DEE and F5DEE) to balance interfacial protection with rapid charge-transfer kinetics.\u003c\/p\u003e\n\u003cp\u003eThe primary electrochemical domains are: (1) \u003cstrong\u003eHigh-Performance Lithium-Metal Batteries (LMBs)\u003c\/strong\u003e: Paired with high-capacity lithium anodes and concentrated salt solutions to achieve high Coulombic efficiencies, suppress dendrite propagation, and prevent dead lithium accumulation under lean-electrolyte conditions. (2) \u003cstrong\u003eHigh-Voltage Full Cells\u003c\/strong\u003e: Integrated into formulations coupled with nickel-rich layered oxide cathodes (such as NMC811) operating above 4.3 V to prevent transition-metal dissolution and parasitic oxidative side reactions.\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 100%; height: 307.925px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.7019%; height: 35.6px;\"\u003e\u003cem\u003ePart Number\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9772%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCBESAF6DEE (C-BESA-F6DEE)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.7019%; height: 35.6px;\"\u003e\u003cem\u003eCAS\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9772%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e80054-75-7\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 112.725px;\"\u003e\n\u003ctd style=\"width: 33.7019%; height: 112.725px;\"\u003e\u003cem\u003eChemical Formula\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9772%; height: 112.725px;\"\u003e\n\u003cp\u003e\u003cspan\u003eC\u003c\/span\u003e\u003csub\u003e6\u003c\/sub\u003e\u003cspan\u003eH\u003c\/span\u003e\u003csub\u003e8\u003c\/sub\u003e\u003cspan\u003eF\u003c\/span\u003e\u003csub\u003e6\u003c\/sub\u003e\u003cspan\u003eO\u003c\/span\u003e\u003csub\u003e2\u003c\/sub\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CBESAF6DEE_Structure_100x100.jpg?v=1789931860\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.7019%; height: 35.6px;\"\u003e\u003cem\u003eAppearance\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9772%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eColorless liquid\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 10px;\"\u003e\n\u003ctd style=\"width: 33.7019%; height: 10px;\"\u003e\n\u003cstrong\u003e \u003c\/strong\u003e\u003cem\u003ePurity\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 65.9772%; height: 10px;\"\u003e\n\u003cp\u003e\u003cspan\u003e\u0026gt;99.0%\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 33.7019%; height: 19.6px;\"\u003e\u003cem\u003eMolecular Weight\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9772%; height: 19.6px;\"\u003e\u003cspan\u003e226.12 g\/mol\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 33.7019%; height: 19.6px;\"\u003e\u003cem\u003ePackage Size\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9772%; height: 19.6px;\"\u003e\u003cspan\u003e5 g, 10 g, and 25 g\/bottle\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e: Please store the F6DEE liquid in the dry place (glovebox is the best).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eReferences\u003c\/strong\u003e: \u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.nature.com\/articles\/s41560-021-00962-y\"\u003e\u003cspan\u003eZ. Yu, et al. Rational solvent molecule tuning for high-performance lithium metal battery electrolytes, Nature Energy, 2022, 7, 94–106.\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.pnas.org\/doi\/abs\/10.1073\/pnas.2301260120\"\u003e\u003cspan\u003eX. Gao, et al. Electrolytes with moderate lithium polysulfide solubility for high-performance long-calendar-life lithium–sulfur batteries, 2023, DOI: 10.1073\/pnas.2301260120\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"CHEMFISH","offers":[{"title":"5 g","offer_id":48415079760102,"sku":"CBESAF6DEE5","price":249.0,"currency_code":"USD","in_stock":true},{"title":"10 g","offer_id":48415079792870,"sku":"CBESAF6DEE10","price":459.0,"currency_code":"USD","in_stock":true},{"title":"25 g","offer_id":48415079825638,"sku":"CBESAF6DEE25","price":1099.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CBESAF6DEE_main.jpg?v=1789931860","url":"https:\/\/echemsupplies.com\/products\/cbesaf6dee","provider":"EChem Supplies","version":"1.0","type":"link"}