Precision Etched Bipolar Plates for Hydrogen Fuel Cell & Electrolyzer
Product Overview
Xinhaisen manufactures high-precision etched bipolar plates for hydrogen fuel cells and PEM electrolyzers using advanced photo chemical etching technology. Compared with conventional machining, chemical etching enables burr-free micro flow channels, high dimensional accuracy, and excellent repeatability without introducing mechanical stress.
Our etched bipolar plates are available in stainless steel, titanium, nickel, and other corrosion-resistant alloys. They are widely used in hydrogen production systems, fuel cell stacks, electrochemical reactors, and laboratory research equipment.
Whether for prototype development or high-volume production, we provide custom flow field patterns, precision tolerances, rapid sampling, and reliable OEM manufacturing services.
What is Chemical Etching?
Chemical etching (also known as photochemical machining) is a subtractive manufacturing process that uses chemical solutions to dissolve metal precisely. Unlike traditional stamping or machining, etching creates burr-free, stress-free plates without mechanical force. This allows for complex micro-flow channel designs, tight tolerances, and rapid prototyping, making it ideal for the intricate structures required in bipolar plates.
Product Features
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High Precision: Achieve micro-channel widths as fine as 0.015mm and uniform flow field depths with an accuracy of ±0.03mm.
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Burr-Free & Stress-Free: Unlike mechanical punching, our process leaves no burrs or micro-cracks, ensuring the longevity and safety of the membrane electrode assembly (MEA).
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Ultra-Thin Capabilities: Process metals as thin as 0.5mm, enabling lighter stacks and higher power density.
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Complex Geometries: Capable of producing intricate flow field patterns (e.g., serpentine, parallel, pin-type) to suit specific gas diffusion requirements.
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Material Versatility: Compatible with various metals including stainless steel (304, 316L), titanium, and other corrosion-resistant alloys.
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Consistency: High-volume repeatability ensures that every plate in your stack performs identically.
✔ Thin Metal Processing
✔ Low Tooling Cost
✔ Fast Prototype
✔ OEM & ODM Support
✔ Mass Production Capability
✔ Corrosion Resistant Materials
Product Specifications
| Parameter |
Specification |
| Product Name |
Electrolyzer Bipolar Plate |
| Material Options |
Stainless Steel (304, 316L), Titanium, Copper, Alloy |
| Material Thickness |
0.02 mm – 1.5 mm |
| Min. Line Width |
0.015 mm |
| Min. Aperture (Hole) |
0.03 mm |
| Dimensional Tolerance |
±0.03 mm (Uniformity) |
| Lead Time |
Fast prototyping (5-7 days); Mass production available |
| Surface Finish |
As etched, passivated, or custom surface treatment |
| MOQ |
Negotiable |
| Process |
Chemical Etching |
Note: Custom specifications are available upon request.
Our Advantages
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Rapid Turnaround: With an efficient production setup, we handle urgent orders and large-volume demands without compromising quality.
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Cost Efficiency: Our chemical etching process eliminates high tooling costs (no expensive hard tooling required), making it cost-effective for both prototyping and mass production.
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Expertise in Thin Metals: Specializing in thicknesses down to 0.5mm, we offer solutions for lightweight stack designs that maximize energy density.
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Quality Assurance: We ensure high uniformity across thousands of pieces, critical for stable stack performance.
Applications
Bipolar plates manufactured by Xinhaisen are suitable for:
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Proton Exchange Membrane Fuel Cells (PEMFC): Used in automotive (cars, trucks), drones, and stationary power systems.
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Water Electrolyzers: For green hydrogen production.
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Portable Power Systems: Compact, high-efficiency energy devices.
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Aerospace & Aviation: Lightweight components for air mobility.
Hydrogen Storage Systems
Electrochemical Reactors
Energy Storage Equipment
Research Laboratories
Hydrogen Stack Manufacturers
Clean Energy Equipment
FAQ
- Q: What materials do you recommend for bipolar plates?
A: We typically recommend Stainless Steel (316L) for its excellent corrosion resistance and cost-effectiveness, or Titanium for applications requiring higher strength-to-weight ratios.
- Q: Can you achieve the tight tolerances required for sealing?
A: Yes. Our etching process maintains a uniformity of ±0.01mm, ensuring that the plates mate perfectly with gaskets to prevent gas leakage.
- Q: Do you charge high tooling fees for custom designs?
A: No. One of the major benefits of chemical etching is the low tooling cost. We use digital tooling, allowing us to adjust flow field designs quickly without expensive physical molds.
- Q: What is the lead time for a prototype?
A: Typically, prototypes can be delivered within 5 to 7 days after design confirmation.
- Q: Can you handle large-scale production?
A: Absolutely. We are equipped to handle massive, high-volume orders while maintaining strict consistency across all plates.
Welcome to contact us at any time!
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