{"product_id":"cbesadmee","title":"DMEE {1,1-Difluoro-2-(2-methoxyethoxy)ethane, DFE, \u003e99.0%} as Battery Electrolyte Co-Solvent and Additive, 5-25 g\/bottle, CBESADMEE","description":"\u003cp\u003e1,1-Difluoro-2-(2-methoxyethoxy)ethane (commonly designated as DMEE or DFE) is a specialized asymmetric fluorinated ether engineered as an advanced electrolyte co-solvent, diluent, and solvation-sheath modifier for next-generation lithium-metal, lithium-sulfur, and sodium-ion batteries. By combining a fluorinated terminal segment with a polar oligoether backbone, DMEE bridges the gap between conventional glymes and heavily fluorinated media.\u003c\/p\u003e\n\u003cp\u003eIts functional roles in electrolyte engineering are: (1) \u003cstrong\u003eSolvation Sheath \u0026amp; Anion Coordination Tuning\u003c\/strong\u003e: DMEE’s moderated electron-donating capability prevents over-solvation of alkali metal ions (Li+, Na+), encouraging the formation of contact ion pairs (CIPs) and aggregates (AGGs) even at moderate salt concentrations. (2) \u003cstrong\u003ePassivation \u0026amp; Interphase Engineering (SEI\/CEI)\u003c\/strong\u003e: Because of its tailored reduction and oxidation potentials, DMEE participates in early-stage electrochemical decomposition. This promotes the precipitation of a dense, inorganic-rich Solid Electrolyte Interphase (SEI) and Cathode Electrolyte Interphase (CEI) enriched with metal fluorides (LiF \/ NaF). (3) \u003cstrong\u003eHigh-Voltage Oxidative Stability\u003c\/strong\u003e: The electron-withdrawing fluorinated tail helps suppress premature oxidative breakdown at the positive electrode, raising the operational voltage ceiling for cells operating above 4.3 V.\u003c\/p\u003e\n\u003cp\u003eThe primary electrochemical domains are: (1) \u003cstrong\u003eHigh-Voltage Lithium-Metal Batteries\u003c\/strong\u003e: Integrated into liquid or localized high-concentration electrolyte (LHCE) formulations to suppress lithium dendrite propagation and protect high-nickel layered oxide cathodes (e.g., NMC811) from continuous parasitic oxidation. (2) \u003cstrong\u003eLithium-Sulfur (Li-S) \u0026amp; Sodium Systems\u003c\/strong\u003e: Deployed to restrain polysulfide dissolution in sulfur systems or to enhance Coulombic efficiency and interfacial reversibility in sodium metal and hard carbon chemistries.\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 100%; height: 239.325px;\"\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\u003eCBESADMEE (C-BESA-DMEE)\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\u003e1270009-33-0\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 57.725px;\"\u003e\n\u003ctd style=\"width: 33.7019%; height: 57.725px;\"\u003e\u003cem\u003eChemical Formula\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9772%; height: 57.725px;\"\u003e\n\u003cp\u003e\u003cspan\u003eC\u003c\/span\u003e\u003csub\u003e5\u003c\/sub\u003e\u003cspan\u003eH\u003c\/span\u003e\u003csub\u003e1\u003c\/sub\u003e\u003csub\u003e0\u003c\/sub\u003e\u003cspan\u003eF\u003c\/span\u003e\u003csub\u003e2\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\/CBESADMEE_Structure_100x100.jpg?v=1789975278\" 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\u003e140.13 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 DMEE 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\/s41467-025-59967-w\"\u003e\u003cspan\u003eG. Zhang, et al. High-energy and fast-charging lithium metal batteries enabled by tuning Li+-solvation via electron-withdrawing and lithiophobicity functionality, Nature Communications, 2025, 16, 4722\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca href=\"https:\/\/pubs.acs.org\/aelccp\/article-abstract\/11\/1\/517\/5152813\/Advanced-All-Fluorinated-Electrolytes-for-Extended\"\u003eJ. M. Kim, et al. Advanced All-Fluorinated Electrolytes for Extended Cycle Life and Stability of Li||SPAN Batteries, ACS Energy Lett. (2026) 11 (1): 517–525.\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"CHEMFISH","offers":[{"title":"5 g","offer_id":48415916228838,"sku":"CBESADMEE5","price":109.0,"currency_code":"USD","in_stock":true},{"title":"10 g","offer_id":48415916261606,"sku":"CBESADMEE10","price":199.0,"currency_code":"USD","in_stock":true},{"title":"25 g","offer_id":48415916294374,"sku":"CBESADMEE25","price":359.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CBESADMEE_main.jpg?v=1789975279","url":"https:\/\/echemsupplies.com\/products\/cbesadmee","provider":"EChem Supplies","version":"1.0","type":"link"}