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 grade that gives the best adhesion ideal for its usage in lithium batteries. The high purity and crystallinity levels are the guarantee for high resistance in typical electrolytes used in lithium batteries.

General
Features Homopolymer, ultra high viscosity
Uses Lithium battery binders
Forms White powder
Items Typical Value Test Method
FL2000-1 FL2000-2
Physical Properties
Density(g/cc) 1.77~1.79 1.77~1.79 ASTM D792
Particle size (μm) (D50) ≤70 ≤70 ISO 22412
Water Absorption (%) (Time 24 hr) ≤0.040 ≤0.040 ISO 62
Dissolution properties
Rotational viscosity (cps) 8000-12000 1gPVDF:10gNMP,#3spindle,25℃
Rotational viscosity (cps) 8000-16000 0.8gPVDF:10gNMP,#3spindle,25℃
Molecular properties
Molecular weight (Da) 1,000,000~1,250,000 1,500,000~2,000,000 GPC,DMF,ISO 16014
Intrinsic viscosity (Dl/g) 3.0~3.3 3.8~4.5 30,DMAC℃, DMAC
Molecular weight distribution 1.8-2.5 1.8-2.5 GPC,DMF,ISO 16014
Thermal Properties
Melting Point(℃) 169~173 169~173 ASTM D3418
Crystallization Temperature(DSC peak)(℃) 137~144 137~144 ASTM D3418
Glass Transition Temp, Tg(℃) -40.0 -40.0 ASTM E1356
Decomposition Temperature(℃) 375 375 1% wt. loss / in air
Crystallization Heat(J/g) 50.0~56.0 50.0~56.0 ASTM D3417
Heat of Fusion(J/g) 55.0~66.0 55.0~66.0 ASTM D3417
Electrical Properties
Surface Resistance(ohm) ≥1.00E+14 ≥1.00E+14 Voltage<1V
After 2 min—500V
ASTM D257
Electrical Resistivity(ohm·cm) ≥1.00E+14 ≥1.00E+14 Intensity=10mA
After 2 min@23℃
ASTM D257

PVDF Binder | Copolymer Formulas

Targray PVDF is an ultra high viscosity grade polyvinylidene fluoride copolymer molecules containing polar functional groups can be enhanced between the polymer molecules, the active substance and force between the pole pieces of metal, and to improve the adhesion properties in the electrolyte corrosion resistance.

Targray PVDF can effectively reduce the amount of formula, reducing battery DC resistance, to improve the energy density of the battery charge and discharge performance, effectively inhibiting cell resistance changes during the cycle, and thus meet the needs of the automotive industry.

General
Features Copolymer, ultra high viscosity
Uses Lithium battery binders
Forms White powder
Items Typical Value Test Method
FL2100-1 FL2100-2
Physical Properties
Density(g/cc) 1.77~1.79 1.77~1.79 ASTM D792
Particle size (μm) (D50) ≤70 ≤70 ISO 22412
Water Absorption (%) (Time 24 hr) ≤0.040 ≤0.040 ISO 62
Dissolution properties
Rotational viscosity (cps) 8,000-10,000 1gPVDF:10gNMP,#3spindle,25℃
Rotational viscosity (cps) 8,000-10,000 0.8gPVDF:10gNMP,#3spindle,25℃
Molecular properties
Molecular weight (Da) 1,100,000~1,300,000 1,300,000~1,500,000 GPC,DMF,ISO 16014
Intrinsic viscosity (Dl/g) 3.1~3.5 3.6~4.0 30℃, DMAC
Molecular weight distribution 2.5-3.5 2.5-3.5 GPC,DMF,ISO 16014
Thermal Properties
Melting Point(℃) 162~168 162~168 ASTM D3418
Crystallization Temperature(DSC peak)(℃) 130~140 130~140 ASTM D3418
Glass Transition Temp, Tg(℃) -40.0 -40.0 ASTM E1356
Decomposition Temperature(℃) 350 350 1% wt. loss / in air
Crystallization Heat(J/g) 36.0~45.0 36.0~45.0 ASTM D3417
Heat of Fusion(J/g) 40.0~50.0 40.0~50.0 ASTM D3417
Electrical Properties
Surface Resistance(ohm) ≥1.00E+14 ≥1.00E+14 Voltage<1V
After 2 min—500V
ASTM D257
Electrical Resistivity(ohm·cm) ≥1.00E+14 ≥1.00E+14 Intensity=10mA
After 2 min@23℃
ASTM D257

Working alongside organizations including Electrochemical Society and NAATBatt, we’re focused on helping battery manufacturers commercialize ambitious new energy storage technologies.

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