PVDF Binder for Lithium Ion Battery

• Separator Type: /
• Negative Materials: /
• Electrolyte: /
• Cathode Materials: /
• Type: Battery Binder
• Transport Package: Carboard Boxes
• Model NO.: TOB-PVDF-770
• Specification: 500g/bag
• Trademark: TOB
• Origin: China
• Production Capacity: 10000bag/Month

Product Description

PVDF Binder For Lithium Ion Battery

Feature

TOB-PVDF-770 is a fluoropolymer binder for electrodes in lithium-ion battery.

It is especially suitable for high-nickel materials and sodium-ion batteries. 

It can solve the gel problem when mixing the slurry. In addition, it can also soften the battery electrode.

This binder shows better alkali resistance as compared with standard PVDF binders. Therefore, it has long-term stability with electrode slurry using strong alkaline active materials such as NMC811 and NCA, which enables stable coating in the electrode process.

This binder also applies the great flexibility on electrodes. It achieves high electrode density, and can contribute to high battery capacity.

 

 

Properties	Typical Value	Test method
Physical
Specific Gravity	1.76 - 1.79	ASTM D792
Molecular Weight	1.5- 2.0×106	GPC
Water Absorption	<0.2%	ASTM D543
Mechanical
Tensile Modulus	600 to 800 MPa	ASTM D638
Viscosity
Solution Viscosity	1140 to 2250 mPa s	B-type viscometer
Intrinsic Viscosity	0.25 to 0.32 l/g	Ubbelohde viscometer
Thermal
Melting Point6	163 to 173oC	DSC
Glass Transition Temperature	-30 to -40oC	DSC
Heat of Fusion	45 to 55 J/g	DSC
Peak Crystallization Temperature	135 to 145oC	DSC
Thermal Stability	>370oC	TGA
Electrical
Surface Resistivity	>1.0E+14 ohms	JIS K6911
Volume Resistivity	>1.0E+14 ohmscm	JIS K6911
Weight loss on heat
Volatile	0.1 wt% MAX	Dkin's method

 

 

1. Molecular weight data were obtained by Gel permeation Chromatography in dimethylformamide. (40ºC)

2. 23 ºC, 24hr

3. The test sample is a press sheet at 250ºC.   Thickness: 2 mm , Dumbbell Type, Speed: 50mm/min

4. B-type viscometer, Rotor no.THM-13, 12rpm, 25 ºC

5. DMF, 30 ºC, Ubbelohde viscometer

6. Heating rate: 20ºC/min, Main peak

7. Heating rate: 20ºC/min

8. Cooling rate: 20ºC/min, Main peak

9. @ 1% weight loss

10. Film thickness: 35 mm, After 5 min, 500V @23ºC, 30%RH

11. Weight loss after heating for 2 hours at 150ºC