{"product_id":"cbesabfe","title":"BFE {Bis(2-fluoroethyl) Ether, \u003e99.0%} as Battery Electrolyte Co-Solvent and Additive, 5-25 g\/bottle, CBESABFE","description":"\u003cp\u003eBis(2-fluoroethyl) ether (commonly designated as \u003cb\u003eBFE\u003c\/b\u003e) is a symmetrically fluorinated linear ether engineered as an advanced co-solvent, solvation-sheath modifier, and interphase-directing additive for next-generation lithium-metal and lithium-sulfur batteries. By introducing a single fluorine atom onto each terminal ethyl group of a traditional diethyl ether backbone, BFE strikes a balanced compromise between the high solvation strength of unfluorinated glymes and the exceptional electrochemical stability of heavily perfluorinated ethers.\u003c\/p\u003e\n\u003cp\u003eIts functional roles in electrolyte engineering are: (1) \u003cstrong\u003eBalanced Solvation Sheath Modification\u003c\/strong\u003e: BFE coordinates effectively with lithium ions (Li+) while promoting dynamic exchange within the primary solvation shell. This prevents excessive solvent-separated ion pairing and facilitates beneficial counter-anion incorporation into the inner coordination sphere. (2) \u003cstrong\u003eAnion-Derived Solid Electrolyte Interphase (SEI) Formation\u003c\/strong\u003e: Due to its tailored reduction potential, BFE participates in early-stage electrochemical reduction on reactive lithium or sodium metal anodes. This reductive breakdown assists in constructing a robust, inorganic-rich SEI layer heavily enriched with metal fluorides (LiF), mitigating dendrite propagation and dead lithium formation. (3) \u003cstrong\u003eOxidative Stability Enhancement\u003c\/strong\u003e: The presence of the terminal fluorine atoms lowers the Highest Occupied Molecular Orbital (HOMO) energy level compared to standard diethyl ether, elevating the anodic stability threshold and suppressing premature oxidation during high-voltage operation. (4) \u003cstrong\u003ePolysulfide Solvation Control (Li-S Systems)\u003c\/strong\u003e: BFE exhibits moderate dissolving power toward lithium polysulfide intermediates, helping restrain the destructive polysulfide shuttle effect while maintaining active charge-transfer kinetics in sulfur cathodes.\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 advanced fluorosulfonylimide salts to achieve high Coulombic efficiencies and extended cycle life under lean-electrolyte configurations. (2) \u003cstrong\u003eLithium-Sulfur (Li-S) Chemistries\u003c\/strong\u003e: Integrated as a functional co-solvent to suppress self-discharge, improve calendar life, and balance mass transport parameters in low- and high-sulfur-loading electrodes.\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 100%; height: 241.325px;\"\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\u003eCBESABFE (C-BESA-BFE)\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\u003e373-21-7\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 59.725px;\"\u003e\n\u003ctd style=\"width: 33.7019%; height: 59.725px;\"\u003e\u003cem\u003eChemical Formula\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9772%; height: 59.725px;\"\u003e\n\u003cp\u003e\u003cspan\u003eC\u003c\/span\u003e\u003csub\u003e4\u003c\/sub\u003e\u003cspan\u003eH\u003c\/span\u003e\u003csub\u003e8\u003c\/sub\u003e\u003cspan\u003eF\u003c\/span\u003e\u003csub\u003e2\u003c\/sub\u003e\u003cspan\u003eO\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CBESABFE_Structure_100x100.jpg?v=1789933750\" 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: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.7019%; height: 35.6px;\"\u003e\n\u003cstrong\u003e \u003c\/strong\u003e\u003cem\u003ePurity\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 65.9772%; height: 35.6px;\"\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\u003e110.10 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 BFE 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\u003cspan\u003e\u003ca href=\"https:\/\/www.nature.com\/articles\/s41467-023-36793-6\"\u003eG. Zhang, et al. A monofluoride ether-based electrolyte solution for fast-charging and low-temperature non-aqueous lithium metal batteries, Nature Communications, 2023, 14, 1081\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/pubs.rsc.org\/ta\/article-abstract\/12\/5\/2986\/831983\/Impact-of-the-fluorination-degree-of-ether-based\"\u003e\u003cspan\u003eY. Lin, et al. Impact of the fluorination degree of ether-based electrolyte solvents on Li-metal battery performance, J. Mater. Chem. A (2024) 12 (5): 2986–2993.\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"CHEMFISH","offers":[{"title":"5 g","offer_id":48415128748262,"sku":"CBESABFE5","price":139.0,"currency_code":"USD","in_stock":true},{"title":"10 g","offer_id":48415128781030,"sku":"CBESABFE10","price":249.0,"currency_code":"USD","in_stock":true},{"title":"25 g","offer_id":48415128813798,"sku":"CBESABFE25","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CBESABFE_main.jpg?v=1789933751","url":"https:\/\/echemsupplies.com\/products\/cbesabfe","provider":"EChem Supplies","version":"1.0","type":"link"}