{"product_id":"cbeatfems","title":"TFEMS {1,1,1-Trifluoro-2-(methylsulfonyl)ethane, \u003e99.0%} as Battery Electrolyte Additive, 5 g\/bottle, CBEATFEMS","description":"\u003cp\u003e1,1,1-Trifluoro-2-(methylsulfonyl)ethane (commonly designated as TFEMS) is a specialized beta-fluorinated sulfone engineered as an advanced high-voltage co-solvent, structural modifier, and functional interphase-directing additive for next-generation lithium-ion and lithium-metal batteries. By incorporating a strongly electron-withdrawing trifluoroethyl group adjacent to a stable sulfonyl center (-SO2-), TFEMS achieves exceptional oxidative stability without the severe cathodic degradation issues characteristic of overly reactive alpha-fluorinated analogues.\u003c\/p\u003e\n\u003cp\u003eIts functional roles in electrolyte engineering are: (1) \u003cstrong\u003eHigh-Voltage Anodic Stability\u003c\/strong\u003e: Because of the strong electron-withdrawing influence of the terminal trifluoroethyl segment, TFEMS exhibits high resistance to oxidative decomposition, protecting the electrolyte against premature breakdown when operating upper-cutoff voltages. (2) \u003cstrong\u003eInterphase \u0026amp; SEI Support\u003c\/strong\u003e: It assists in regulating reductive decomposition pathways at the anode interface, helping construct stable protective layers when paired with appropriate co-solvents (such as fluoroethylene carbonate, FEC). (3) \u003cstrong\u003eSafety \u0026amp; Thermal Enhancement\u003c\/strong\u003e: The robust sulfone architecture combined with a high fluorine fraction suppresses flammability and elevates thermal stability compared to conventional linear carbonate or ether master matrices.\u003c\/p\u003e\n\u003cp\u003eThe primary electrochemical domains are: (1) \u003cstrong\u003eHigh-Voltage Lithium-Ion Full Cells\u003c\/strong\u003e: Integrated into specialized electrolyte formulations to support nickel-rich or high-voltage transition metal oxide cathodes operating well above standard electrochemical limits. (2) \u003cstrong\u003eWide-Temperature and Extreme-Condition Cells\u003c\/strong\u003e: Deployed to extend operational safety margins and prevent runaway thermal events in demanding storage and cycling environments.\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 100%; height: 273.6px;\"\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\u003eCBEATFEMS (C-BEA-TFEMS)\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\u003e222611-23-6\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 92px;\"\u003e\n\u003ctd style=\"width: 33.7019%; height: 92px;\"\u003e\u003cem\u003eChemical Formula\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.9772%; height: 92px;\"\u003e\n\u003cp\u003eC₃H₅F₃O₂S\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CBEATFEMS_Structure_100x100.jpg?v=1790012353\" 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\u003e162.13 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\/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 TFEMS 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\/s41560-025-01842-5\"\u003e\u003cspan\u003eR. Li, et al. Unified affinity paradigm for the rational design of high-efficiency lithium metal electrolytes, Nature Energy, 2025, 10, 1155–1165\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/pubs.acs.org\/aelccp\/article-abstract\/10\/1\/356\/3812581\/High-Voltage-Electrolyte-and-Interface-Design-for?redirectedFrom=fulltext\"\u003e\u003cspan\u003eY. H. T. Tran, et al. High-Voltage Electrolyte and Interface Design for Mid-Nickel High-Energy Li-Ion Batteries, ACS Energy Lett. (2025) 10 (1): 356–370.\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"CHEMFISH","offers":[{"title":"Default Title","offer_id":48419358212326,"sku":"CBEATFEMS","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CBEATFEMS_main.jpg?v=1790012353","url":"https:\/\/echemsupplies.com\/products\/cbeatfems","provider":"EChem Supplies","version":"1.0","type":"link"}