{"product_id":"cbespy12fsi","title":"Py12FSI {1-Ethyl-1-methylpyrrolidinium bis(fluorosulfonyl)imide, \u003e99.9%} Ionic Liquid as Battery Electrolyte Solvent, 25-100 g\/bottle, CBESPy12FSI","description":"\u003cp\u003ePy12FSI (1-Ethyl-1-methylpyrrolidinium bis(fluorosulfonyl)imide) is a high-performance room-temperature ionic liquid (RTIL) that pairs the robust, reduction-resistant pyrrolidinium cation with the highly conductive, flexible FSI anion. Compared to its TFSI-based counterpart (Py12TFSI), the smaller and more labile FSI anion grants Py12FSI superior transport properties, making it a favored solvent\/salt matrix for advanced lithium and sodium batteries operating under more demanding kinetic conditions.\u003c\/p\u003e\n\u003cp\u003eThe key physicochemical \u0026amp; electrochemical characteristics are: (1) \u003cstrong\u003eEnhanced Ionic Conductivity \u0026amp; Lower Viscosity\u003c\/strong\u003e: Because the FSI anion has a lower molecular weight, smaller ionic radius, and weaker charge localization than TFSI, Py12FSI exhibits significantly lower viscosity and higher ionic conductivity at room temperature. This directly mitigates the mass-transport limitations typically associated with ionic liquid electrolytes. (2) \u003cstrong\u003eFavorable Interfacial Chemistry (SEI Formation)\u003c\/strong\u003e: The FSI anion readily decomposes under cathodic polarization to form a stable, inorganic-rich Solid Electrolyte Interphase (SEI) containing lithium fluoride (LiF) and sulfur-oxygen species. This enables much more efficient and stable plating\/stripping behavior on lithium or sodium metal anodes. (3) \u003cstrong\u003eWide Electrochemical Window\u003c\/strong\u003e: While its oxidative stability limit is slightly lower than that of Py12TFSI due to the more reactive sulfonyl groups, it still maintains an exceptionally broad window (typically stable up to ~ 4.5-4.8 V vs. Li}\/Li+), rendering it well-suited for high-voltage systems like LMFP or mid-nickel cathodes.\u003c\/p\u003e\n\u003ctable style=\"width: 100%; height: 272.4px;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 35.6px;\"\u003e\u003cem\u003ePart Number\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCBESPy12FSI (C-BES-Py12FSI)\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: 33.6331%; height: 35.6px;\"\u003e\u003cem\u003eCAS\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e950488-21-8\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: 33.6331%; height: 35.6px;\"\u003e\u003cem\u003eChemical Formula\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 35.6px;\"\u003e\n\u003cp\u003eC₇H₁₆F₂N₂O₄S₂\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 35.6px;\"\u003e\u003cem\u003eAppearance\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eColorless to pale yellow liquid or organic ionic plastic crystal material\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 71.2px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 71.2px;\"\u003e\n\u003cstrong\u003e \u003c\/strong\u003e\u003cem\u003ePurity\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 71.2px;\"\u003e\n\u003cp\u003e\u003cspan\u003e\u0026gt;99.9% (Battery Grade)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHumidity level\u0026lt;100 ppm\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: 33.6331%; height: 19.6px;\"\u003e\u003cem\u003eMolecular Weight\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 19.6px;\"\u003e\u003cspan\u003e294.35 g\/mol\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 19.6px;\"\u003e\u003cem\u003eDensity\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 19.6px;\"\u003e\u003cspan\u003e~1.38 g\/cm3\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 19.6px;\"\u003e\u003cem\u003ePackage Size\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 19.6px;\"\u003e\u003cspan\u003e25 g, 50 g, and 100 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 try to store the Py12FSI in a dry place (dryroom or glovebox is preferred option). \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:\/\/advanced.onlinelibrary.wiley.com\/doi\/abs\/10.1002\/aenm.202400731\"\u003eJ. Qin, et al. Plastic Crystal Fast Ion-Conductor Electrolyte Enabled Ultra-Low Temperature Rechargeable Organic Battery, Adv. Energy Mater., 2024, 14, 2400731\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.cell.com\/matter\/fulltext\/S2590-2385(22)00634-8\"\u003e\u003cspan\u003eZ. Huang, et al. A solvent-anchored non-flammable electrolyte, Matter, 2023, 6, 445-459\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"DDDC","offers":[{"title":"25 g","offer_id":67623646101734,"sku":"CBESPy12FSI25","price":119.0,"currency_code":"USD","in_stock":true},{"title":"50 g","offer_id":67623646134502,"sku":"CBESPy12FSI50","price":199.0,"currency_code":"USD","in_stock":true},{"title":"100 g","offer_id":67623646167270,"sku":"CBESPy12FSI100","price":359.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CBESPy12FSI_main.jpg?v=1791157193","url":"https:\/\/echemsupplies.com\/products\/cbespy12fsi","provider":"EChem Supplies","version":"1.0","type":"link"}