Ultra-thin graphite bipolar plate is a kind of high-performance electrochemical device, which has been widely used in fuel cell and other fields.
Features and advantages
- High conductivity: Graphite itself has good electrical conductivity; it can transfer current efficiently, reduce resistance loss, improve energy conversion efficiency.
- Corrosion resistance: Graphite material has excellent chemical stability, is not easy to be corroded in a variety of acid and alkali corrosive environment, can ensure long-term stable work in complex electrochemical environment.
- High mechanical strength: it has a exhibits sufficient hardness and strength, which can withstand the pressure during battery assembly and operation, and provide stable support for the internal structure of the battery.
- Thin design: Through advanced processing technology, ultra-thin graphite bipolar plates with very small thickness can be produced, which helps to reduce the volume and weight of fuel cell stack and improve the overall performance.
Application scenarios
- Fuel cell vehicles: As one of the core components of hydrogen fuel cell vehicles, the application of ultra-thin graphite bipolar plates can improve the performance and range of vehicles.
- Fixed power stations: In scenarios such as data centers and communication base stations, it can achieve efficient energy conversion due to long-term corrosion resistance.
- Electrolytic cell and reactor: In the chlor-alkali industry, it can be used as the electrode material of electrolytic cell to withstand strong acid and alkali environment and prolong the service life of equipment.
- Other fields: it can also be used in energy storage systems, wastewater treatment, hydrogen production and energy storage, photovoltaic and other fields.
Future development trends
- Thinner (<0.3mm): Graphene-reinforced composite materials will be used to break through the thickness limit
- 3D printing technology: direct molding of complex flow channels and reduction of processing steps.
- Intelligent bipolar plate: integrated sensors to monitor the state of fuel cell in real time.
|
Performance Category |
Specific Parameter (Unit) |
Typical Value Range |
|
Core Material Parameters |
Graphite Purity (-) |
≥99.9% |
|
Graphene Reinforcement Content (wt%) |
3-8% |
|
|
Binder (Phenolic Resin) Ratio (wt%) |
10-15% |
|
|
Interlayer Spacing (nm) |
0.335-0.337nm |
|
|
Porosity (%) |
＜1.5% |
|
|
Interface Bonding Strength (MPa) |
＞15MPa |
|
|
Physical Properties - Geometric Dimensions |
Thickness (mm) |
0.25-0.6mm (molding process); 0.4-0.6mm (3D printing) |
|
Flatness (mm/m²) |
≤0.05 |
|
|
Flow Channel Depth Tolerance (μm) |
±10 |
|
|
Flow Channel Width Deviation (μm) |
±15 |
|
|
Physical Properties - Mechanical Performance |
Flexural Strength (MPa) |
60-85 |
|
Compressive Strength (MPa) |
100-160 |
|
|
Impact Toughness (kJ/m²) |
3.5-5.0 |
|
|
Electrical Performance |
Surface Resistivity (mΩ·cm²) |
≤8 |
|
Volume Resistivity (μΩ·m) |
5-10 |
|
|
Environmental Resistance |
Corrosion Current Density (Acidic Environment) (μA/cm²) |
≤1.0 |
|
Operating Temperature Range (℃) |
-40~180 |
|
|
Service Life in Humid Heat Environment (80℃/95%RH) (h) |
≥30000 |
|
|
Air Tightness |
Hydrogen Permeability (cm³/(cm²·h·atm)) |
≤2×10⁻⁹ |
|
Helium Leak Rate (mbar·L/s) |
≤1×10⁻⁶ |
|
|
Thermal Performance |
Thermal Conductivity (W/(m·K)) |
80-150 |
|
Coefficient of Thermal Expansion (10⁻⁶/K) |
≤5 |
Note:This product supports personalized customization.
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