Polyvinylidene Fluoride (PVDF)

Polyvinylidene fluoride (PVDF) is a highly non-reactive and pure thermoplastic fluoropolymer. It is known for its exceptional adhesion, chemical stability, thermal stability and chemical compatibility, which makes it a popular choice for binders of electrode materials in the battery industry. Alfa Chemistry can provide PVDF binder in different forms, including powders and emulsions. Please contact us for pricing and more information on this product.

Product Name: Polyvinylidene Fluoride (PVDF)

CAS Number: 24937-79-9

Molecular Weight: about 600

Basic Parameters

Items	Polyvinylidene Fluoride (PVDF)
Catalog	ACSEM-BM-B001
Linear Formula	(CH₂CF₂)_n
Purity	≥99.6%
Appearance	White powder
Standard Specific Gravity	1.74-1.77
Dielectric Constant	4.50-5.50 at 100MHZ 8.00-9.50 at 100HZ
Melting Point	160-168 °C
Melting Indix	1-2 g/10min
Solubility	Soluble as transparent solution
Rotation Viscosity	≥2000 mPa·s
Intrinsic Viscosity	1.0-2.0 dL/g
Moisture	≤0.1%

Note: The specifications of the product can be adjusted according to your requirements.

Properties

PVDF is a commonly used binder material in lithium-ion batteries, particularly for the cathodes. Here are the properties that make PVDF a suitable choice for battery applications:

Adhesion. PVDF provides strong adhesion between electrode materials and the current collector, ensuring good cohesion within the electrode and improving the cycle life of the battery.
Chemical stability. PVDF exhibits excellent chemical resistance to various solvents, electrolytes, and high-temperature conditions, which is essential for maintaining performance over the battery's life.
Thermal stability. PVDF Maintains performance even at elevated temperatures, which is crucial for the safety and longevity of batteries.
Chemical compatibility. PVDF is compatible with a wide range of active materials and electrolytes, helping to facilitate ion transport and improve overall battery performance.

Application Note

The PVDF binder is thoroughly mixed with the active material, where ratio can range from 30:70 to 1:99, respectively, depending on application, active material, additives, etc. Use N-methyl-2-pyrrolidone (NMP) to dilute if necessary. The resulting slurry is coated on current collector (e.g. doctor blade) and dried (usually at 80 °C) in vacuum or ambient environment.

Empower your energy solutions with our superior PVDF battery binder –– the ultimate choice for durability and performance.

Polyvinylidene Fluoride (PVDF)

Basic Parameters

Properties

Application Note

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