{"product_id":"cssgpecpi6976","title":"Cationic Photoinitiator 6976 (UVI-6976) for Solid-State \u0026 Gel Polymer Electrolytes (GPEs), 50-200 g\/bottle, CSSGPECPI6976","description":"\u003cp\u003eCationic Photoinitiator 6976 (widely known commercially as UVI-6976) is a high-performance cationic photoinitiator consisting of a mixture of triarylsulfonium hexafluoroantimonate salts typically dissolved in propylene carbonate (~50% active solids). In advanced energy storage and materials research, Photoinitiator 6976 is utilized for the rapid UV-induced cationic ring-opening polymerization (CROP) of epoxy resins, cyclic ethers, and vinyl ether crosslinking precursors (such as PEGE, PEGDE, and GMA) for Gel Polymer Electrolytes (GPEs) and solid-state polymer electrolyte systems.\u003c\/p\u003e\n\u003cp\u003eIts main features are: (1) \u003cstrong\u003eTriarylsulfonium Hexafluoroantimonate Structure\u003c\/strong\u003e: Features mixed triarylsulfonium cations paired with weakly coordinating hexafluoroantimonate (SbF6^-) counterions. Upon UV irradiation, photolysis generates strong Brønsted\/Lewis superacids that drive rapid cationic ring-opening reactions. (2) \u003cstrong\u003eLiquid Formulation\u003c\/strong\u003e: Supplied as a clear, low-viscosity amber liquid (formulated in propylene carbonate), allowing effortless, homogeneous mixing into liquid electrolyte precursor solutions without the dissolution hurdles associated with solid crystalline salts. (3) \u003cstrong\u003eHigh Photolytic Reactivity \u0026amp; Quantum Yield\u003c\/strong\u003e: Exhibits exceptionally high photosensitivity and rapid acid-generation rates under UV exposure, enabling fast gelation kinetics even at low concentrations. (4) \u003cstrong\u003eDark Curing Capability\u003c\/strong\u003e: Because cationic polymerization is driven by active acid catalysts rather than transient free radicals, the polymerization reaction can continue (\"dark cure\") after the UV light source is turned off, ensuring complete monomer conversion throughout thick or shadowed separator pores. \u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003eIts main functional roles in GPEs synthesis are: (1) \u003cstrong\u003eUV-Triggered Cationic Ring-Opening Polymerization (CROP)\u003c\/strong\u003e: Unlike standard free-radical photoinitiators (such as TPO-L or BAPO) that target vinyl-bearing acrylates, Photoinitiator 6976 specifically targets oxygen-ring structures (epoxides and cyclic ethers), allowing the UV-curing of robust ether-linked networks (like PEGE or PEGDE) that offer superior electrochemical stability against alkali metal anodes. (2) \u003cstrong\u003eElimination of Thermal Curing Constraints\u003c\/strong\u003e: Replaces thermal Lewis acid catalysts (such as Al(OTf)3 or Sc(OTf)3) with a clean, room-temperature light-triggered mechanism. This avoids prolonged heating steps and prevents premature thermal expansion mismatches during cell assembly. (3) \u003cstrong\u003eDeep Section Curing in Porous Separators\u003c\/strong\u003e: The strong acid generation efficiency ensures thorough crosslinking deep within thick separator matrices (such as glass fiber or high-porosity polyolefin membranes) and dense electrode microstructures.\u003c\/div\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ctable style=\"width: 100%; height: 377.637px;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 28.0702%; height: 35.6px;\"\u003e\u003cem\u003ePart Number\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.6374%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCSSGPECPI6976 (C-SSGPE-CPI6976)\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: 28.0702%; height: 35.6px;\"\u003e\u003cem\u003eCAS\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.6374%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e71449-78-0\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 137px;\"\u003e\n\u003ctd style=\"width: 28.0702%; height: 137px;\"\u003e\u003cem\u003eChemical Formula\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.6374%; height: 137px;\"\u003e\n\u003cp\u003eC24H19F6S2Sb\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CSSGPECPI6976_structure_160x160.jpg?v=1793518254\" 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: 28.0702%; height: 35.6px;\"\u003e\u003cem\u003eTypes\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.6374%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e(1) Photoinitiator 6976S: 99.0% purity solid, customer can choose appropriate solvents for dissovation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e(2) Photoinitiator 6976L: 50 wt% 6976S dissolved in PC solvent.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e     Viscosity:100 cps, density:1.35-1.45, boiling point: 232 ℃\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: 28.0702%; height: 35.6px;\"\u003e\u003cem\u003eAbsorption Wavelength\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.6374%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eMax. 279 nm and 291 nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 26.0375px;\"\u003e\n\u003ctd style=\"width: 28.0702%; height: 26.0375px;\"\u003e\u003cem\u003ePackage Size\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.6374%; height: 26.0375px;\"\u003e50 g, 100 g, and 200 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 try to store the photoinitiator 6976 power or solution in a dry place and dark place.\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.sciencedirect.com\/science\/article\/abs\/pii\/S0378775324008966\"\u003e\u003cspan\u003eT. Zhu, et al. Ultraviolet-cured heat-resistant and stretchable gel polymer electrolytes for flexible and safe semi-solid lithium-ion batteries, Journal of Power Sources, 2024, 613, 234944\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/pubs.acs.org\/aapmcd\/article-abstract\/6\/2\/1159\/356532\/Role-of-Precursors-and-Doping-Agents-in-Producing?redirectedFrom=fulltext\"\u003e\u003cspan\u003eR. Carcione, et al. Role of Precursors and Doping Agents in Producing 3D-Printed PEGDA–PDANI Electroactive Composites by an In Situ Polymerization Approach, ACS Appl. Polym. Mater. (2024) 6 (2): 1159–1168.\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"SHYCXC","offers":[{"title":"Photoinitiator 6976S (50 g)","offer_id":67939252502758,"sku":"CSSGPECPI6976S50","price":99.0,"currency_code":"USD","in_stock":true},{"title":"Photoinitiator 6976S (100 g)","offer_id":67939252535526,"sku":"CSSGPECPI6976S100","price":179.0,"currency_code":"USD","in_stock":true},{"title":"Photoinitiator 6976S (200 g)","offer_id":67939252568294,"sku":"CSSGPECPI6976S200","price":299.0,"currency_code":"USD","in_stock":true},{"title":"Photoinitiator 6976L (50 g)","offer_id":67939296018662,"sku":"CSSGPECPI6976L50","price":79.0,"currency_code":"USD","in_stock":true},{"title":"Photoinitiator 6976L (100 g)","offer_id":67939296051430,"sku":"CSSGPECPI6976L100","price":139.0,"currency_code":"USD","in_stock":true},{"title":"Photoinitiator 6976L (200 g)","offer_id":67939296084198,"sku":"CSSGPECPI6976L200","price":239.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CSSGPECPI6976_main.jpg?v=1793518255","url":"https:\/\/echemsupplies.com\/products\/cssgpecpi6976","provider":"EChem Supplies","version":"1.0","type":"link"}