Flow Field Plates Chemical Etching for Hydrogen Fuel Cell Applications

Precision Etched Flow Field Plates

Xinhaisen provides custom photo chemical machining (PCM) services for manufacturing precision Flow Field Plates in stainless steel, titanium and nickel alloys. Our etching process produces complex microchannels without burrs or mechanical stress, making it ideal for next-generation hydrogen applications.

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.

  PEM Water Electrolyzers

  Hydrogen Production Systems

  Fuel Cell Stacks

  Hydrogen Energy Equipment

  Electrolysis Systems

  Research Institutes

  Laboratory Equipment

  Renewable Energy 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!