Custom Metal Flow Field Plate for PEM Electrolyzer and Fuel Cell Stack

Custom Metal Flow Field Plate for PEM Electrolyzer and Fuel Cell Stack

Precision Etched Flow Field Plates for Hydrogen Fuel Cell and Electrolyzer Applications

Xinhaisen specializes in manufacturing high-precision etched flow field plates for PEM fuel cells, PEM electrolyzers, alkaline electrolyzers, and hydrogen energy systems. Using advanced photo chemical etching technology, we produce intricate flow channel patterns with exceptional dimensional accuracy, burr-free edges, and stress-free processing.

Our flow field plates are engineered to optimize gas distribution, water management, electrical conductivity, and overall stack efficiency. Compared with conventional machining, chemical etching enables finer channels, lower tooling costs, rapid design changes, and high repeatability, making it ideal for prototype development and volume production.

Key Features

• Precision chemical etching technology
• Complex flow channel geometries
• Uniform channel dimensions
• Burr-free and deformation-free
• High dimensional consistency
• Excellent corrosion resistance
• Rapid prototype development
• Cost-effective mass production
• OEM and ODM manufacturing
• Custom drawings accepted

Available Flow Field Patterns

• Parallel Flow Field
• Serpentine Flow Field
• Interdigitated Flow Field
• Pin-Type Flow Field
• Spiral Flow Field
• Multi-Pass Flow Field
• Customized Flow Channel Design

Manufacturing Capability

Our precision etching process enables the production of microchannels with excellent consistency while avoiding thermal distortion or mechanical stress.

Typical capabilities include:

• Fine channel structures
• Smooth channel walls
• Tight dimensional tolerances
• Complex internal geometries
• Large production capacity
• Consistent quality control

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 Specifications

Note: Custom specifications are available upon request.

Our Advantages

• Rapid Turnaround: With an efficient production setup, we handle urgent orders and large-volume demands without compromising quality.

• 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.

• Expertise in Thin Metals: Specializing in thicknesses down to 0.5mm, we offer solutions for lightweight stack designs that maximize energy density.

• Quality Assurance: We ensure high uniformity across thousands of pieces, critical for stable stack performance.

Applications

Bipolar plates manufactured by Xinhaisen are suitable for:

• Proton Exchange Membrane Fuel Cells (PEMFC): Used in automotive (cars, trucks), drones, and stationary power systems.

• Water Electrolyzers: For green hydrogen production.

• Portable Power Systems: Compact, high-efficiency energy devices.

• Aerospace & Aviation: Lightweight components for air mobility.

  
  

  • Fuel Cell Stacks
  • Electrolyzer Stacks
  • Green Hydrogen Projects
  • Renewable Energy Systems
  • Research Laboratories
  • University Research Projects

  
  

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!

For over 13 years Xinhaisen has pioneered developments in photochemical etching, achieving standards admired by the industry and appreciated by a global customer base from a wide range of high-tech engineering markets.

Since found in 2012, in affiliating with our customers we have pioneered many new production techniques and methodologies in order to better serve their needs. It is these techniques that have advanced our capabilities further, enabling us to take what was once considered art and turn it into a science.

Now, we became China's leading photochemical etching specialist, with also the capacity of offering stamping and laser-cutting service. Our products include etching bipolar plates for fuel cell, speaker grills,  micro meshes&filters, tea&coffee infusers, shims&gaskets, Optical encoderdisk&strip, EMI/RFI shielding, Leadframes, connectors&contacts, printingstencils&foils and metal crafts.

Quality and service is our mission, Xinhaisen is committed to pursuing the highest standards of environmental performance. Responsibility for sustainability resides with all employees. The company has achieved ISO 14001 and IS0 9001 and IATF 16949 and is committed to maintaining that standard. With a fast response, high quality, best service and fair price, we have gained high reputation from our customers all over the world.