Advanced Graphite Felt for Enhanced Flow Battery Efficiency

• Customization: Available
• Classification: Carbon Fiber Reinforced Carbide Matrix Composites
• Feature: Chemical Corrosion Resistance, Corrosion Resistance, Good Abrasion Resistance, Good Insulation Performance, High Mechanical Strength, Thermal Shock Resistance, Instant Materials
• Model NO.: L: 10/20/50/100 W: 1.42/1.45 T: 2.2/3.0/3.6/4.
• Shape: Electrode
• Usage: Aerospace, Automotive Manufacturing, Electronic Equipment, High-Temperature Furnaces, Wind Energy
• 1: Solar
• 2: Vacuum Heat Treatment
• 3: Hard Alloys
• 4: New Energy Storage
• 5: Metallurgical High-Temperature Thermal Field
• 6: Mechanical Manufacturing High-Temperature
• 7: High-Pressure Forming
• 8: Battery
• 9: Sealing
• 10: Insulation Material
• 11: Chemical Industry
• 12: Metalllurgical
• 13: Aerospace Field
• 14: Electronics Field
• 15: Environmental Protection Field
• Transport Package: Standard Exporting
• HS Code: 6815100000
• Production Capacity: 50000mt Per Year, 50000mt/Year

Product Description

Our products have developed rapidly in both domestic and foreign markets. In terms of flow battery electrode products, it holds a leading position in the domestic market, with products applied in multiple domestic flow battery demonstration power stations, and after long-term operation verification, the product quality has also been widely recognized in foreign markets. In terms of carbon fiber thermal insulation materials, they are widely used in various industries such as hard alloys and special ceramics.


Widely used in the field of photovoltaic solar energy, vacuum heat treatment, cemented carbide, new energy storage, metallurgical high temperature thermal field, mechanical manufacturing high temperature and high pressure molding and other fields.


Our mainly product:


1. Flow battery electrode materials: 
Graphite felt for flow battery electrodes

This product is a special graphite felt electrode material for flow batteries, processed using different treatment processes according to the different performance requirements of various flow batteries for electrode graphite felt. The basic processes include: non-woven needle punching, carbonization, graphitization, and fiber surface post-treatment. This product features a flat felt body, uniform thickness, and consistent electrochemical performance throughout. It is currently widely used in vanadium flow battery electrode materials, zinc-bromine flow battery electrode materials, and zinc-air (zinc-oxygen flow battery electrode materials), with characteristics such as low internal resistance of the stack, good and uniform electrochemical activity, good corrosion resistance, low cycle decay of the stack, and high energy efficiency.
 

2. Specifications and Models

 

Regular Sizes	Length (m)	10/20/50/100
	Width (m)	1.42/1.45
	Thickness (mm)	2.2/3.0/3.6/4.2/4.35/4.6/4.8/5.0/5.6/6.0/7.0
Others		Cut according to customer requirements

3. Technical Indicators and Parameters

Carbon Content / %	>99
Ash Content / %	<0.3
Bulk Density / (g/cm³)	0.08-0.11
Specific Surface Area / (m²/g)	2.3-4
Felt Shedding Rate / (g/gram felt)	2-3
Oxidation Rate / (weight loss/hour @600ºC in air)	≤3%
Porosity / %	90-95
Surface Resistance / (Ω/cm²)	<0.15

4. Vanadium Flow Battery Performance Curve

 

 

5. Exploration of Activation Mechanism (Influence of Active Functional Groups)

 

6. Exploration of Activation Mechanism (Microscopic Surface Area Imaging)

 

7. Electron Microscopy Images of Electrode Graphite Felt for Batteries

 

8. Professional Team and Technical Support

Our company has a complete vanadium battery testing system. The testing instruments simulate the working principles of large battery energy storage devices to test the performance of graphitized battery felt. At the same time, further modification of the graphite improves its energy efficiency. Under a current density of 100mA/cm², the energy efficiency is greater than 85%; at 120mA/cm², it is greater than 84%; at 160mA/cm², it is greater than 82%.The main technical parameters include coulombic efficiency, energy efficiency, and voltage efficiency.

9. Packaging and Transportation
Packaging: Woven bag packaging
Transportation Method: Road logistics or express delivery

10. Precautions
Do not apply heavy pressure during transportation and storage, keep it moisture-proof, and it can be cut as needed.
 

2. High temperaure thermal insulation materials
1)PAN-based cured graphite felt

1) Product Description
This product is made of PAN-based carbon felt as the matrix material. It has certain rigidity, self-supporting properties, low specific gravity, no short fiber shedding, and low thermal conductivity.
It is suitable for various vacuum heat treatment furnaces, powder metallurgy sintering furnaces, and other furnace types. It can provide various shapes such as flat plates, discs, and cylinders, with a long service life and easy installation and removal.

2) Specifications and Models
Manufactured according to user drawings or agreed upon with the user.

3) Surface Treatment
A. No treatment; B. Adhesive graphite paper; C. Adhesive graphite cloth; D. Surface coating

4) Technical Indicators and Parameters

Performance Indicators	Unit	PAN-based cured carbon felt	PAN-based cured graphite felt
Bulk Density	g/cm³	0.15-0.28	0.13-0.25
Thermal Conductivity in Nitrogen 1000ºC	w/k.m	0.15-0.20	0.28-0.31
Compressive Strength ∥ ⊥	M/Pa	>2.81 >1.47	>2.45 >1.05
Flexural Strength ∥ ⊥	M/Pa	>1.88 >0.96	>1.48 >0.69
Carbon Content	w%	>97	>99.80
Ash Content	w%	<0.4	<0.1
Processing Temperature	ºC	1250	2200

5) Packaging and Transportation
Packaging: Wooden box packaging
Transportation method: Road logistics or express delivery

6) Precautions
When the temperature exceeds 400ºC, it must be used in a protective atmosphere or inert gas; during transportation and storage, it should not be subjected to heavy pressure and must be moisture-proof.

 

2)Oxidized filament(PAN-based) soft graphite felt
3)Viscose-based cured graphite felt
4)Viscose-based soft graphite felt