Cationic Photoinitiator 6976 (UVI-6976) for Solid-State & Gel Polymer Electrolytes (GPEs), 50-200 g/bottle, CSSGPECPI6976
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Cationic 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.
Its main features are: (1) Triarylsulfonium Hexafluoroantimonate Structure: 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) Liquid Formulation: 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) High Photolytic Reactivity & Quantum Yield: Exhibits exceptionally high photosensitivity and rapid acid-generation rates under UV exposure, enabling fast gelation kinetics even at low concentrations. (4) Dark Curing Capability: 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.
| Part Number |
CSSGPECPI6976 (C-SSGPE-CPI6976) |
| CAS |
71449-78-0 |
| Chemical Formula |
C24H19F6S2Sb  |
| Types |
(1) Photoinitiator 6976S: 99.0% purity solid, customer can choose appropriate solvents for dissovation. (2) Photoinitiator 6976L: 50 wt% 6976S dissolved in PC solvent. Viscosity:100 cps, density:1.35-1.45, boiling point: 232 ℃ |
| Absorption Wavelength |
Max. 279 nm and 291 nm |
| Package Size | 50 g, 100 g, and 200 g/bottle |
Notes: Please try to store the photoinitiator 6976 power or solution in a dry place and dark place.
References:
- T. 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
- R. 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.