{"product_id":"clibeacsfsi","title":"CsFSI {[Cesium bis(fluorosulfonyl)imide], \u003e99.95%} Powder as Electrolyte Additive for Lithium-Ion Battery, 10-50 g\/bottle, CLIBEACsFSI","description":"\u003cp\u003eCsFSI (Cesium bis(fluorosulfonyl)imide, {CsN(SO2CF3)2} is an alkali metal imide salt investigated as a functional additive in non-aqueous electrolytes for lithium-metal, lithium-sulfur, and liquid-polysulfide flow batteries. It combines the heavy alkali cation Cs+ with the flexible, weakly coordinating, highly fluorinated TFSI- anion.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaximum Electrostatic Shielding\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e(Cs+): The Cs+ cation provides an effective Self-Healing Electrostatic Shield (SHES): The standard reduction potential of Cs+ (~ -2.92 V vs. SHE) is slightly less negative than that of Li+ (~ -3.04 V). During fast charging, electric fields concentrate at microscopic peaks\/dendrite tips on the lithium anode. Cs+ ions rapidly migrate to these high-field regions and accumulate without being reduced into metallic cesium. This accumulation forms a localized positive electrostatic buffer that repels incoming Li+ ions toward surrounding valleys, driving uniform, planar lithium electrodeposition across the anode surface.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSolid Electrolyte Interphase (SEI) Modification \u0026amp; Polysulfide Interaction\u003c\/strong\u003e: (1) \u003cem\u003eF-Rich \u0026amp; Inorganic Interphases\u003c\/em\u003e: The FSI- anion decomposes at low potentials to build an inorganic-rich interphase (containing LiF, Li2S, and Li3N species), suppressing continuous solvent breakdown. (2) \u003cem\u003ePolysulfide Compatibility\u003c\/em\u003e: In lithium-sulfur (Li-S) and lithium-polysulfide (LiPS) flow battery chemistries, the incorporation of CsFSI enhances bulk electrolyte ionic conductivity and boosts Coulombic efficiency during long-term cycling.\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 100%; height: 233px;\"\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\u003eCLIBEACsFSI (C-LIB-EA-CsFSI)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 87px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 87px;\"\u003e\u003cem\u003eChemical Formula\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 87px;\"\u003e\n\u003cp\u003eCsN(SO2F)2\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CLIBEACsFSI_02_100x100.jpg?v=1785773565\" 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: 33.6331%; 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\u003eWhite Powder\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\u003ePurity\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e\u0026gt;99.95% (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: 33.6331%; height: 19.6px;\"\u003e\u003cem\u003eMolecular Weight\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 19.6px;\"\u003e\u003cspan\u003e314.05 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\u003ePackage Size\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 19.6px;\"\u003e10 g, 25 g, and 50 g\/bottle\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 CsFSI powder 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\n\u003ca href=\"https:\/\/pubs.acs.org\/aelccp\/article-abstract\/8\/3\/1468\/340487\/Solvent-Free-and-Long-Cycling-Garnet-Based-Lithium?redirectedFrom=fulltext\"\u003e\u003cspan\u003eJ. Yu, et al. Solvent-Free and Long-Cycling Garnet-Based Lithium-Metal Batteries, ACS Energy Lett. (2023) 8 (3): 1468–1476.\u003c\/span\u003e\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/pubs.rsc.org\/ee\/article-abstract\/18\/4\/1696\/310863\/Molten-salt-electrolytes-with-enhanced-Li\"\u003e\u003cspan\u003eS. Yan, et al., Molten salt electrolytes with enhanced Li+-transport kinetics for fast-cycling of high-temperature lithium metal batteries, Energy Environ. Sci. (2025) 18 (4): 1696–1706.\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"DDDC","offers":[{"title":"10 g","offer_id":48105778577638,"sku":"CLIBEACsFSI10","price":119.0,"currency_code":"USD","in_stock":true},{"title":"25 g","offer_id":48105778610406,"sku":"CLIBEACsFSI25","price":259.0,"currency_code":"USD","in_stock":true},{"title":"50 g","offer_id":48105778643174,"sku":"CLIBEACsFSI50","price":489.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CLIBEACsFSI_main.jpg?v=1785773566","url":"https:\/\/echemsupplies.com\/products\/clibeacsfsi","provider":"EChem Supplies","version":"1.0","type":"link"}