Description

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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.

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
Electrical Performance	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
Air Tightness	Helium Leak Rate (mbar·L/s)	≤1×10⁻⁶
Thermal Performance	Thermal Conductivity (W/(m·K))	80-150
Thermal Performance	Coefficient of Thermal Expansion (10⁻⁶/K)	≤5

Note:This product supports personalized customization.

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.