{"product_id":"cbesafdmb","title":"FDMB (2,2,3,3-Tetrafluoro-1,4-Dimethoxybutane, \u003e99.0%) as Battery Electrolyte Co-Solvent and Additive, 5-25 g\/bottle, CBESAFDMB","description":"\u003cp\u003e2,2,3,3-Tetrafluoro-1,4-dimethoxybutane (commonly designated as FDMB or fluorinated 1,4-dimethoxybutane) is a specialized fluorinated ether derivative engineered as an advanced solvent, co-solvent, and interphase-directing additive for next-generation lithium-metal, anode-free, and lithium-sulfur batteries. By incorporating strategic perfluoroalkylene segments (-CF2CF2-) into a traditional glyme-like backbone, FDMB bridges the high-solvation advantages of linear ethers with the exceptional electrochemical stability and safety profile of fluorinated media.\u003c\/p\u003e\n\u003cp\u003eIts main functional roles in electrolyte engineering are: (1) \u003cstrong\u003eSolvation Sheath Modulation \u0026amp; Anion Coordination\u003c\/strong\u003e: FDMB modifies the primary lithium-ion solvation shell, discouraging aggressive solvent-separated ion pairing and encouraging beneficial anion incorporation (such as with LiFSI salts) into the inner coordination sphere. (2) \u003cstrong\u003eRobust Anode Passivation (SEI Engineering)\u003c\/strong\u003e: Due to its tailored reduction potential, FDMB preferentially decomposes during initial electrochemical formation steps. This reductive pathway yields a dense, inorganic-rich Solid Electrolyte Interphase (SEI) heavily enriched with lithium fluoride (LiF), which isolates the reactive lithium surface and inhibits dendrite proliferation. (3) \u003cstrong\u003ePolysulfide Trapping (Lithium-Sulfur Systems)\u003c\/strong\u003e: The polar fluorinated structure exhibits strong binding affinity toward lithium polysulfides, effectively suppressing the destructive polysulfide shuttle phenomenon in high-energy sulfur cathodes. (4) \u003cstrong\u003eIntrinsic Flame Retardancy\u003c\/strong\u003e: The dense fluorine content significantly enhances thermal stability and suppresses vapor-phase radical propagation, drastically lowering the flammability risk compared to conventional carbonate or volatile ether electrolytes.  \u003c\/p\u003e\n\u003cp\u003eIts main electrochemical applications are: (1) \u003cstrong\u003eHigh-Performance Lithium-Metal \u0026amp; Anode-Free Cells\u003c\/strong\u003e: Paired with salts like lithium bis(fluorosulfonyl)imide (LiFSI) to enable highly reversible stripping\/plating behavior, driving Coulombic efficiencies past 99.5% in half-cells and unlocking practical anode-free pouch cell configurations. (2) \u003cstrong\u003eAdvanced Lithium-Sulfur (Li-S) Batteries\u003c\/strong\u003e: Deployed as a primary co-solvent to maintain high specific discharge capacity near theoretical limits while achieving exceptional long-term cycle retention.\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 100%; height: 250.325px;\"\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\u003eCBESAFDMB (C-BESA-FDMB)\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\u003e2738080-99-2\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 68.725px;\"\u003e\n\u003ctd style=\"width: 33.7019%; height: 68.725px;\"\u003e\u003cem\u003eChemical Formula\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9772%; height: 68.725px;\"\u003e\n\u003cp\u003eC₆H₁₀F₄O₂\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CBESAFDMB_Structure_100x100.png?v=1789884429\" 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% (Battery Grade)\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\u003e190.14 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 FDMB in the glovebox due to its sensitivity to humidity and oxygen.\u003c\/span\u003e\u003cspan\u003e \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:\/\/pubs.acs.org\/aamick\/article-abstract\/17\/34\/48209\/3640017\/A-Synergistic-Strategy-for-the-Development-of?redirectedFrom=fulltext\"\u003e\u003cspan\u003eM. W. Hasan, et al. A Synergistic Strategy for the Development of Advanced, Scalable Lithium–Sulfur Batteries, ACS Appl. Mater. Interfaces (2025) 17 (34): 48209–48219.\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca href=\"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/abs\/10.1002\/batt.202500246\"\u003eX. Zhu, et al. Molecular Engineering of Electrolyte Solvents for Lithium Metal Batteries: Strategies, Challenges, and Prospects, Batteries \u0026amp; Supercaps, 2025, 8, e202500246\u003c\/a\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"CHEMFISH","offers":[{"title":"5 g","offer_id":48412499575014,"sku":"CBESAFDMB5","price":199.0,"currency_code":"USD","in_stock":true},{"title":"10 g","offer_id":48412499607782,"sku":"CBESAFDMB10","price":369.0,"currency_code":"USD","in_stock":true},{"title":"25 g","offer_id":48412499640550,"sku":"CBESADMP25","price":879.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CBESAFDMB_main.jpg?v=1789884429","url":"https:\/\/echemsupplies.com\/products\/cbesafdmb","provider":"EChem Supplies","version":"1.0","type":"link"}