{"product_id":"cbeadfdec","title":"DFDEC {2,2-Difluoroethyl Ethyl Carbonate, \u003e99.0%} as Battery Electrolyte Additive, 5 g\/bottle, CBEADFDEC","description":"\u003cp\u003e\u003cb\u003e2,2-Difluoroethyl ethyl carbonate\u003c\/b\u003e\u003cspan\u003e (commonly designated as \u003c\/span\u003e\u003cb\u003eDFDEC\u003c\/b\u003e\u003cspan\u003e or as the related partially fluorinated unsymmetrical linear carbonate subclass) is a specialized organic carbonate engineered as an advanced electrolyte co-solvent and functional interphase-directing additive for high-voltage and high-safety lithium-ion and lithium-metal batteries.\u003c\/span\u003e\u003cspan\u003e By pairing a conventional ethyl group with a partially fluorinated 2,\u003c\/span\u003e\u003cspan\u003e2-difluoroethyl ester segment,\u003c\/span\u003e\u003cspan\u003e DFDEC optimizes the balance between oxidative resistance,\u003c\/span\u003e\u003cspan\u003e cathodic passivation,\u003c\/span\u003e\u003cspan\u003e and fluidic transport properties.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIts functional roles in electrolyte engineering are: (1) \u003cstrong\u003eControlled Interphase (SEI\/CEI) Passivation\u003c\/strong\u003e: Because of its tailored reduction and oxidation potentials, DFDEC undergoes early-stage electrochemical decomposition during initial cell formation. This sacrificial breakdown promotes the precipitation of a stable, inorganic-rich Solid Electrolyte Interphase (SEI) on the anode and a protective Cathode Electrolyte Interphase (CEI) rich in metal fluorides (LiF}). (2) High-Voltage Oxidative Stability: The partial fluorination of the linear carbonate architecture elevates the anodic stability ceiling, helping suppress electrolyte oxidation, gas evolution, and transition-metal dissolution when operating high-nickel layered oxide cathodes (e.g., NMC811) above $4.3\\text{ V}$.Flame Retardancy \u0026amp; Safety Enhancement: Incorporating dense fluorine fractions into the carbonate backbone helps lower overall heat release rates and suppress vapor flammability during thermal abuse or extreme operating conditions.\u003c\/p\u003e\n\u003cp\u003eThe primary electrochemical domains are: (1) \u003cstrong\u003eHigh-Voltage Nickel-Rich Cells\u003c\/strong\u003e: Integrated into standard carbonate master electrolytes to support long-term cycling stability in cells paired with high-nickel layered oxide cathodes (e.g., NMC811) operating at upper voltage cutoffs exceeding 4.3 V. (2) \u003cstrong\u003eCapacity Retention and Impedance Suppression\u003c\/strong\u003e: Deployed to reduce polarization growth, mitigate gas evolution, and prevent rapid capacity fade under aggressive charging and high-temperature operating protocols.\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 100%; height: 239.525px;\"\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\u003eCBEADFDEC (C-BEA-DFDEC)\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\u003e916678-14-3\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 57.925px;\"\u003e\n\u003ctd style=\"width: 33.7019%; height: 57.925px;\"\u003e\u003cem\u003eChemical Formula\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9772%; height: 57.925px;\"\u003e\n\u003cp\u003eC5H8F2O3\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CBEADFDEC_Structure_100x100.jpg?v=1790008217\" 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\u003e154.11 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\/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 DFDEC 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:\/\/pubs.acs.org\/jacsat\/article-abstract\/146\/44\/30104\/92020\/Synergistic-Anion-and-Solvent-Derived-Interphases?redirectedFrom=fulltext\"\u003e\u003cspan\u003eS. Tan, et al. Synergistic Anion and Solvent-Derived Interphases Enable Lithium-Ion Batteries under Extreme Conditions, Journal American Chemical Society (2024) 146 (44): 30104–30116.\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/iopscience.iop.org\/article\/10.1149\/2.1141412jes\/meta\"\u003e\u003cspan\u003eH. Q. Pham, et al. Performance Enhancement of 4.8 V Li1.2Mn0.525Ni0.175Co0.1O2 Battery Cathode Using Fluorinated Linear Carbonate as a High-Voltage Additive, J. Electrochem. Soc., 2014, 161, A2002\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"CHEMFISH","offers":[{"title":"Default Title","offer_id":48416049529062,"sku":"CBEADFDEC","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CBEADFDEC_main.jpg?v=1790008216","url":"https:\/\/echemsupplies.com\/products\/cbeadfdec","provider":"EChem Supplies","version":"1.0","type":"link"}