PVDF-TrFE {(poly(vinylidene fluoride-trifluoroethylene)} as Gel Polymer Electrolyte (GPE), 100 g/bottle, CGPEPVDFTrFE

Using PVDF-TrFE (poly(vinylidene fluoride-trifluoroethylene)) as the host matrix for a gel polymer electrolyte (GPE) is a highly effective strategy for next-generation batteries, particularly when dealing with aggressive chemistries like high-voltage lithium-ion, sodium-ion, or solid-state lithium-metal cells. Compared to standard PVDF or PVDF-HFP, the introduction of the TrFE term alters the polymer physics in ways that directly translate to better electrochemical performance.

Enhanced Ferroelectric Polar Phase (β-phase): Standard PVDF naturally crystallizes into the non-polar a-phase, requiring mechanical stretching or specific quenching to achieve the highly polar β-phase. The strong dipole moment of the C-F bonds in the β-phase increases the dielectric constant of the polymer matrix. This high dielectric constant heavily promotes the dissociation of metal salts (e.g., LiTFSI, NaFSI, or NaClO4), leading to a higher concentration of free mobile ions and reducing ion-pairing.

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	CGPEPVDFTrFE (C-GPE-PVDFTrFE)
CAS	28960-88-5
Chemical Formula	(C4H3F5)n
Average Molecular Weight	Mw = ~450000, 100 g/bottle

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

References: 

1. C. M. Costa, et al. Poly(vinylidene fluoride)-based, co-polymer separator electrolyte membranes for lithium-ion battery systems, J. Power Sources, 2014, 245, 779-786
2. H. Kim, et al. High-performance solid-state Li-ion batteries enabled by homogeneous, large-area ferroelectric PVDF-TrFE solid polymer electrolytes via horizontal centrifugal casting method, Energy Storage Materials, 2024, 67,103260