Vapor Grown Carbon Fiber VGCF for Battery

Vapor Grown Carbon Fiber VGCF for Battery

Packaging: 3kg/bag

Minimum order quantity: 3kg/bag

SPECIFICATIONS

VGCF-H features and material properties

Vapor grown carbon fibers (VGCFs) have desirable properties, such as relatively high mechanical strength and electrical conductivity both in single fiber and bulk states, including their very special network-like morphology, which improve the performance of electrodes in lead-acid and lithium-ion batteries, especially their cycling characteristics.

1. Features

(1) High purity

(2) High conductivity (conductivity/heat transfer)

(3) Low specific surface area

(4) Good dispersibility

2. Material properties

3. Reduce the amount of additives and binders

(1) High electronic conductivity

Can reduce the usage of conductive additives.

(2) High electrode adhesion

The amount of adhesive used can be reduced (because VGCF-H has a small SSA, it does not absorb too much adhesive.)

NMC：CB： PVDF = 94： 3： 3    

NMC：CB：VGCF-H：PVDF = 94： 2： 1： 3

Prevents cracking of electrodes when drying

Drying conditions: 0.5m/min , 100-120℃

CB: 3%, PVDF:3%                                                                                         (CB: 1.5%+VGCF-H: 1.0%), PVDF：2.5%

VGCF-H exhibited the lowest DCR and the highest output performance

Charge 0.2C, cc-cv, 3.6V, 0.05C

Discharge (0.2, 0.5, 1, 3, 5, 7, 10 C) cc, 2.0V

VGCF-H exhibited the highest cycle performance

Charge 1.0C, cc-cv, 3.6V, 0.05C

Discharge 1.0C, cc, 2.0V

Improve low temperature cycle: 0℃

Using VGCF-H/CB/CNT together can improve low temperature cycle

Long fiber VGCF-H can maintain the conductive path between active materials, so it can improve the capacity retention rate.

Experimental conditions

Charge: CC-CV (1.0C), 4.2V·C/50

Discharge: CC (1.0C), 2.8V

Temperature: 0℃

Improved low temperature characteristics: -20℃

Experimental conditions

Charging: CC (0.5C), 4.2V·C/50

Temperature: -20℃

Using VGCF-H/CB/CNT together can improve low temperature characteristics

In the low temperature range, the impedance of Li+ migration increases, and the long fiber VGCF-H can improve the migration of Li+.

 Skype : amywangbest86

 Whatsapp/Phone number : +86 181 2071 5609