PVDF-TrFE-CFE {Poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene)} as Gel Polymer Electrolyte (GPE), 50 g/bottle, CGPEPVDFTrFECFE

Comapared to binary PVDF-TrFE copolymer, the PVDF-TrFE-CFE (poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene)) terpolymer introduces a critical structural upgrade: the inclusion of a bulkier, highly polar term that transforms the material from a conventional ferroelectric into a relaxor ferroelectric. In gel polymer electrolytes (GPEs), this terpolymer configuration drastically optimizes both ion transport physics and interfacial mechanics.

Relaxation of Crystallity via "Defect Engineering": The chlorofluoroethylene (CFE) monomer acts as a structural defect or "add-on" within the regular PVDF-TrFE chain. The CFE unit introduces a significantly larger chlorine (Cl) atom into the fluorinated backbone. This sterically disrupts the long-range coherent ferroelectric coupling of the all-trans (TTTT) β-phase, breaking it down into localized nano-domains (relaxor ferroelectric behavior). By destroying long-range crystalline ordering, the terpolymer exhibits a massive increase in the amorphous fraction at room temperature compared to PVDF-TrFE. This vastly increases the matrix’s electrolyte uptake capacity and accelerates liquid-like polymer segment mobility (Tg reduction), driving higher ionic conductivity.

Tailored Amorphous/Crystalline Ratio:  While pure PVDF is highly crystalline (which restricts ionic motion), the bulkier TrFE monomer disrupts structural regularity, lowering the overall crystallinity. This leaves a well-balanced amorphous framework that easily uptakes and traps liquid electrolytes/plasticizers (like EC/DEC, ionic liquids, or fluoroethylene carbonate). The resulting gel provides a continuous pathway for rapid liquid-like ionic diffusion while maintaining a robust, solid-like macroscopic structure.

High Electrochemical & Interfacial Stability: The heavy fluorination of the PVDF-TrFE backbone gives it exceptional resistance to oxidative decomposition at high operating potentials (often stable up to 4.5V–4.8V vs. Li/Li+). Additionally, the robust polymer network prevents the continuous migration of liquid solvents to the reactive metal anode, suppressing runaway Solid Electrolyte Interphase (SEI) growth and dendrite formation.

Part Number	CGPEPVDFTrFECFE (C-GPE-PVDFTrFECFE)
CAS	28960-88-5
Chemical Formula	(C4H3F5)n
Average Molecular Weight	Mw = ~600000, 50 g/bottle

Notes: Please try to store the PVDF-TrFE-CFE in a dry place (glovebox is preferred). 

References: 

1. Z. Haung, et al. Dielectric barrier discharge plasma sulfonated carbon nanotube modified PVDF-TrFE-CFE copolymer electrolyte for high-performance flexible solid-state lithium metal batteries, Journal of Energy Storage, 2025, 131, 117596
2. J. Zhang, et al. High-performance solid-state lithium batteries enabled by PVTC-UIO66 composite electrolytes with ordered ion transport channels, Journal of Power Sources, 2026, 689, 240678