High Viscosity Polyvinylidene Fluoride PVDF Lithuium Battery Cathode Electrode Materials 

Introduction:

PVDF JHS-1020 is a high-viscosity polyvinylidene fluoride (PVDF) resin prepared using a suspension polymerization method with copolymer modification. The copolymer contains polar functional groups, enhancing the adhesion properties between active materials, metal foils, and polymers. This contributes to a reduction in the required formulation dosage. The product is well-suited for the production of high-capacity, high-rate, and high-cycle power batteries.

 Product features:

No.	nature	Test Methods	Unit	JHS-1020
1	Exterior	Visual inspection	-	White powder, no visible impurities
2	solubility	Visual inspection	-	Clear and transparent, no impurities
3	Particle size	ISO 22412	um	≤110(D50)
4	Relative density	GB/T 1033.1	g/cm3	1.75-1.77
5	Moisture content	HG/T2902	Wt%	≤0.10
6	Rotational viscosity	0.07gPVDF:0.93gNMP,25℃	mPa.s	~ 1900 2900
7	Melting point	GB/T 19466.3	℃	160-170
8	Thermal decomposition temperature	TGA	℃	≥370
9	Weight average molecular weight	GPC，DMF		800000~1100000
10	The molecular weight distribution	GPC，DMF		3.0~4.0

Use

Adding suggestions: ternary system (NCM523, NCM622, NCM811, NCA811): 1.2-1.8%;

LEP system: 2.2-2.8%; LMO system: 1.3-1.7%; LCO system: 1.0-1.2%

The amount added is adjusted according to the density and specific surface area of the cathode material.

Instructions for use: When gluing by wet method, stir at high speed for 1-1.5h, wait until the PVDF is completely dissolved before entering the pulping process. Because PVDF resin has a large molecular weight and slow dissolution speed, PVDF can be dissolved by increasing the stirring time.

Measures such as adding to the stirring kettle in batches and increasing the stirring temperature can increase the dissolution rate.