PVDF Binders for Li-ion Batteries

Targray’s ultra-viscous battery-grade PVDF binder formulas deliver best-in-class adhesion for lithium-ion battery manufacturers and R&D Laboratories. Our PVDF formulas are available in commercial-scale quantities both as homopolymer and copolymer powders. For additional details and product specifications, consult the table below.

PVDF Binder | Homopolymer Formulas

Targray PVDF homopolymer is an ultra high viscosity, battery-grade PVDF binder developed specifically for the li-ion battery market.  The powder’s high purity and crystallinity levels deliver exceptional resistance in electrolytes typically used for lithium-ion battery manufacturing.

 

Physical Properties Type 1 Type 2
Density(g/cc) 1.77~1.79 1.77~1.79
Particle size(μm)(D50) ≤70 ≤70
Water Absorption(%)(Time 24 hr) ≤0.040 ≤0.040
Dissolution
Rotational viscosity(cps) 8000-12000
Rotational viscosity(cps) 8000-16000
Molecular
Molecular weight(Da) 1,000,000~1,250,000 1,500,000~2,000,000
Intrinsic viscosity(dl/g) 3.0~3.3 3.8~4.5
Molecular weight distribution 1.8-2.5 1.8-2.5
Thermal
Melting Point(℃) 169~173 169~173
Crystallization Temperature(DSC peak)(℃) 137~144 137~144
Glass Transition Temp, Tg(℃) -40.0 -40.0
Decomposition Temperature(℃) 375 375
Crystallization Heat(J/g) 50.0~56.0 50.0~56.0
Heat of Fusion(J/g) 55.0~66.0 55.0~66.0

PVDF Binder | Copolymer Formulas

Targray PVDF copolymer is an ultra high viscosity grade polyvinylidene fluoride binder for battery manufacturers. This PVDF binder powder can effectively reduce the amount of formula required in manufacturing, lowering battery DC resistance, improving energy density of the battery charge and enhancing discharge performance. Moreover, it inhibits cell resistance changes during cycling, which meets the rigorous needs of automotive battery manufacturers.

 

Physical Properties Type 1 Type 2
Density(g/cc) 1.77~1.79 1.77~1.79
Particle size(μm)(D50) ≤70 ≤70
Water Absorption(%)(Time 24 hr) ≤0.040 ≤0.040
Dissolution
Rotational viscosity(cps) 8,000-10,000
Rotational viscosity(cps) 8,000-10,000
Molecular
Molecular weight(Da) 1,000,000~1,300,000 1,300,000~1,500,000
Intrinsic viscosity(dl/g) 3.1~3.5 3.6~4.0
Molecular weight distribution 2.5-3.5 2.5-3.5
Thermal
Melting Point(℃) 162~168 162~168
Crystallization Temperature(DSC peak)(℃) 130~140 130~140
Glass Transition Temp, Tg(℃) -40.0 -40.0
Decomposition Temperature(℃) 350 350
Crystallization Heat(J/g) 36.0~45.0 36.0~45.0
Heat of Fusion(J/g) 40.0~50.0 40.0~50.0

Working with supply partners and organizations including the Electrochemical Society and NAATBatt International, we help lithium-ion battery manufacturers and researchers worldwide commercialize ambitious new energy storage technologies.

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