Our porous tubes for gas diffusion electrodes (GDE) are engineered for high-performance fuel cell systems, ensuring precise gas transport, optimized electrochemical reaction interfaces, and long-term durability under demanding operating conditions. These tubes combine porous metal sintering technology with customized structural design to meet the needs of PEMFC, SOFC, and alkaline fuel cells.
✅ Uniform Gas Distribution
Micro-porous structure enables even dispersion of hydrogen, oxygen, or air across the catalyst layer, ensuring consistent electrochemical reactions.
✅ High Electrical Conductivity
Made from sintered stainless steel, nickel, or titanium, our tubes support both gas flow and electron conduction within fuel cell stacks.
✅ Chemical and Thermal Resistance
Resists acidic/alkaline environments, oxidation, and high temperatures (up to 650°C) — ideal for PEMFC and SOFC systems.
✅ Custom Pore Size & Porosity
Tailor-made for pore size (1–20 µm), porosity (30–50%), and gas permeability to balance pressure drop, mass transport, and reaction kinetics.
✅ Structural Strength & Stability
Withstands internal gas pressure without deformation; suitable for integration into tubular fuel cells or reactor-type stacks.
| Parameter | Value |
|---|---|
| Material | Sintered SS 316L / Nickel / Titanium |
| Micron Rating | 1–20 µm (customizable) |
| Tube Diameter | 5 – 60 mm |
| Tube Length | Up to 1500 mm |
| Porosity | 30% – 50% |
| Electrical Conductivity | ≥ 1.0 × 10⁴ S/m |
| Operating Temp | Up to 650°C |
| Surface Options | Catalytic coating, electropolishing, hydrophilic/hydrophobic treatment |
PEM Fuel Cells (Proton Exchange Membrane)
Porous tube acts as gas diffusion electrode, enabling hydrogen/oxygen transport and current collection.
Tubular Solid Oxide Fuel Cells (SOFC)
Porous tube as structural anode or cathode support, enduring high heat and chemical interaction.
Alkaline Fuel Cells (AFC)
Used as conductive diffusion layers for air electrodes in tubular AFC configurations.
Electrolyzers & Hydrogen Generators
Porous diffusion layers for electrochemical water splitting or gas separation applications.
Material Choices
SS316L, Nickel, Hastelloy, Titanium – selected based on pH, temperature, and required conductivity.
Micron & Porosity Adjustment
Balance gas permeability with strength and conductivity based on your stack design.
Surface Coating Available
Support for Pt, Ir, Ni, and other catalyst coatings; hydrophobic or hydrophilic treatment upon request.
Shape & Connection
Straight tube, double open end (DOE), one-end-closed, or integrated with flanges, threads, or welding ends.
ISO 9001 Certified Manufacturing
Pore Size & Flow Rate Testing
Corrosion & Pressure Resistance Verification
Electrical Conductivity Measurement
Third-party Inspection Available
✔ Decades of Expertise in porous metal and fuel cell component manufacturing
✔ Fast Sampling & Prototyping for R&D, pilot, and mass production
✔ OEM & Custom Fabrication with flexible engineering support
✔ Global Delivery Capability – ship to North America, EU, South Korea, Japan, and more
✔ Technical Support Team available for stack integration consultation
Whether you're building next-generation fuel cells or need precise GDE components for hydrogen systems, we’re ready to help.
Contact us for:
Technical consultation
Engineering drawing support
Sample evaluation
Bulk pricing
Contact US
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