1. Product Core
As key components in fuel cell stacks, Graphite Conductive Plates for Fuel Cells are precisely machined from high-purity, high-density graphite. Their core value lies in the seamless integration of ultra-low resistance, excellent corrosion resistance in acidic environments, and optimized mass transfer efficiency. These attributes directly determine the power density, durability, and operational safety of fuel cell stacks, meeting the core requirements of high-performance, long-life fuel cell systems determined by big data analysis.
2. Technical Parameters
|
Parameters |
Specifications |
Testing Standards |
|
Graphite Purity |
≥ 99.8% |
ASTM C562 |
|
Volume Resistivity |
≤ 10 μΩ·m |
ASTM D4496 |
|
Compressive Strength |
≥ 40 MPa |
ASTM C695 |
|
Flexural Strength |
≥ 25 MPa |
ASTM C133 |
|
Operating Temperature |
-40℃~120℃ (PEMFC); 600-800℃ (SOFC) |
IEC 62282-3-100 |
|
Hydrogen Permeability |
≤ 1×10⁻⁹ mL/(cm²·s·Pa) |
ISO 11114-4 |
|
Flow Channel Tolerance |
±0.03mm |
ISO 1302 |
|
Surface Roughness |
Ra ≤ 0.8 μm |
ISO 4287 |
|
Maximum Clamping Force |
3MPa |
Customized Stack Test |
|
Service Life |
≥ 20,000 hours (PEMFC) |
DOE Durability Test |
Note: Customized configurations can be provided for specific fuel cell types (PEMFC, SOFC, AFC) and power levels, and coatings (e.g., TiN, CrN) can be selected to enhance performance.
3.Core Functions
Excellent Conductivity: Volume resistivity ≤ 10 μΩ·m (tested by ASTM D4496), minimizing internal power loss and achieving a stack efficiency of ≥ 60% under rated conditions.
Acid Corrosion Resistance: Maintains stable performance after 20,000+ hours of soaking in 0.5M H₂SO₄ solution (35℃), meeting the durability requirements of PEMFC systems.
Precision Flow Field Engineering: Laser-processed flow channels (width 0.8-2mm, depth 0.5-1.5mm) with dimensional tolerances of ≤ ±0.03mm, ensuring uniform distribution of H₂/O₂ and efficient water management-pressure drop is reduced by 15% compared to traditional designs (based on industry benchmark data).
High Mechanical Integrity: Compressive strength ≥ 40MPa (ASTM C695), flexural strength ≥ 25MPa, capable of withstanding stack clamping force (2-3MPa) without structural deformation.
Low Permeability: Hydrogen leakage rate ≤ 1×10⁻⁹ mL/(cm²·s·Pa), preventing cross-contamination between the anode and cathode, which is crucial for the safety of high-power stacks.
Scalable Customization: Supports sizes from 50×50mm (micro stack) to 600×600mm (megawatt-level system), and undergoes surface treatment (e.g., anti-oxidation coating) to extend service life in solid oxide fuel cell (SOFC) applications.
4. Application Scenarios
Automotive PEMFC Systems
Application: Used as bipolar plates in passenger cars, commercial trucks, and buses (for 50-300kW stacks);
Key Feature: Supports a service life of over 300,000 km, and adapts to low-temperature startup (≥-20℃) and vehicle dynamic working conditions.
Stationary Power Generation
Application: 1-100kW distributed energy systems (industrial parks, data centers, remote areas);
Key Feature: Low resistivity + structural stability, ensuring 99.9% operational availability.
Marine & Railway Transportation
Application: High-power fuel cell modules for ships and locomotives;
Key Feature: Vibration resistance (10-2000Hz), humidity resistance (95% RH), and support for kilowatt-level power.
Portable Power Devices
Application: 100W-5kW compact stacks (military equipment, outdoor research stations, emergency power supplies);
Key Feature: Lightweight (1.8-1.9g/cm³) with ≥40% fuel cell efficiency.
Industrial Fuel Cell Systems
Application: Forklifts, AGVs, backup power supplies for data centers/communication base stations, and waste heat recovery systems;
Key Feature: ≥10,000-hour service life and low maintenance costs.
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