Contact US
lf you have any queries, get in touch today! Don't hesitate, We try to take the extra step forour customer satisfaction.
Products
Nano Carbon Materials
VGCF Nano Carbonfiber Powder BC-CNF200
VGCF carbon nanofibers is optimal in positive and negative electrode active materials for lithium-ion batteries.
Technical Datasheet
Carbon Nanofibers
BC-CNF200
Technical parameters:
Purity: 99.9%
Fiber diameter: 150-200 nm (from HRTEM, Raman)
Length: 10-20 microns (transmission electron microscope)
Aspect ratio: 70
Graphitization: >80%
Conductivity: ρ= 6 * 10 ^ 6Ω*m
Thermal conductivity: K ＞ 1600w ／ mk
Specific Surface Area: 300 square meters/gram (BET)
Thermal conductivity: ~2000 W/m
Thermal expansion coefficient: 1.0 ppm/℃
Volume density: 0.18g/cm3
~True density: 2 g/cm3
About application of carbon nanofibers VGCF in positive and negative electrode active materials for lithium-ion batteries
1. Both positive and negative electrode active materials have expansion and contraction problems. Generally, negative electrode carbon materials have a 20% thermal expansion and contraction rate, such as LFP positive electrode materials, which have a 6% expansion and contraction rate. When repeatedly charged and discharged, the positive and negative electrode active material particles have little contact with each other, the gap increases, or even some of them are separated from the electrode, resulting in discontinuous phases in the electron transport path, becoming dead active materials, and no longer participating in electrode reactions. Therefore, the service life decreases. VGCF has a large aspect ratio. Even after the expansion and contraction of the positive and negative electrode active materials, the gap between their active material particles can be bridged by VGCF, ensuring uninterrupted electron and ion transport.
2. Due to the hollow microstructure of carbon nanofiber VGCF, it can allow the positive and negative electrodes to absorb more electrolyte, allowing lithium ions to be smoothly and quickly embedded, which is conducive to high rate charging and discharging.
3. VGCF is a high-strength fibrous material with a large aspect ratio, which can increase the walkability of the electrode plate. The adhesive force between the positive and negative electrode active material particles is stronger, and it will not crack due to winding.
4. High conductivity and thermal conductivity. The positive electrode active material has poor conductivity. Adding carbon nanofibers to improve the positive electrode active conductivity also improves the positive and negative electrode thermal conductivity, which is conducive to heat dissipation.
Copy product links
Long by picture save/share
INQUIRY
Add Successfully
INQUIRY
Add Successfully
Related products
Innovative MCM Flexible Stone Decoration Veneer
Modified Clay Materials (MCM) Flexible Stone Veneer is a game-changing material that combines the luxurious aesthetics of natural stone with unprecedented flexibility and practicality. This ultra-thin (only 2-3mm), lightweight composite material can bend, curve, and adapt to virtually any surface – something traditional stone could never achieve.
Granulated Carbon Nanotubes (CNTs) BCGC-23
The resulting granulated CNTs retain the intrinsic superior electrical conductivity and mechanical strength of pristine nanotubes while exhibiting dramatically enhanced processability and effectively mitigated nanoparticle aggregation. These engineered particles demonstrate exceptional performance across multiple high-end applications: in lithium-ion battery systems, they function as conductive additives to establish efficient conductive networks, substantially improving energy density and cycle
Multi-Walled Carbon Nanotubes GT-282
Structurally, MWCNTs are elongated cylindrical nano-objects composed of sp²-hybridized carbon atoms, with diameters typically ranging from 3-30 nanometers and lengths that can extend up to several centimeters. This remarkable geometry gives them aspect ratios that can vary from ten to an astounding ten million, making them among the most anisotropic materials known to science. Each tube consists of multiple concentric graphene layers, with the inner channel remaining straight due to the constant
Bravecount GTCO280 Purified Array Carbon Nanotubes for Batteries
GTCO280 is a purified array multi-walled carbon nanotube powder especially applicable for lithium battery applications.
Stay up to date with our latest news
Subscribe to our newsletter and stay updated on the latest
developments and offers!
Stay up to date with our latest news
Subscribe to our newsletter and stay updated on the latest developments and offers!
BRAVECOUNT
点击右上角
分享给朋友吧
Copyright © 2017-2025 Bravecount. All Rights Reserved.
