Precision Etching Metallic Bipolar Plates for Fuel Cell Electrolyzers

Bipolar Plates Overview

Xinhaisen's chemically etched bipolar plates deliver superior performance in fuel cells, electrolyzers, and flow batteries. Our photochemical etching technology enables complex micro-flow patterns with unmatched precision, optimizing gas/liquid distribution while minimizing pressure drop. These plates are critical for improving energy efficiency in hydrogen applications.

Bipolar Plates Features

• Ultra-Precise Micro-Channels: Achieves exact channel dimensions, depths, and land widths with exceptional uniformity for optimal fluid dynamics and electrical contact.

• Stress & Burr-Free: The non-contact etching process ensures no mechanical stress, no deformation, and absolutely smooth channel walls, critical for sealing and stack integrity.

• Design Agility: Effortlessly accommodates complex, multi-zone flow field patterns (serpentine, parallel, pin-type) and custom port designs without expensive hard tooling.

• Material Versatility: Processes a wide range of conductive metals, including titanium, stainless steel (316L), aluminum, and coated substrates.

• High Throughput & Scalability: Perfectly suited for both rapid prototyping (days) and cost-effective, high-volume production.

• Excellent Surface Finish: Provides an ideal, consistent surface for subsequent critical coatings, enhancing performance and longevity.

Bipolar Plates Specifications

Bipolar Plates Applications

• PEM Fuel Cells: For automotive, stationary power, backup systems, and portable power devices.

• PEM Electrolyzers: For green hydrogen production.

• Redox Flow Batteries: As electrode plates or current collectors.

• Research & Development: For testing novel flow field designs and materials with fast turnaround.

FAQ

• Q: Why is photochemical etching better than stamping for bipolar plates?
  A: Etching produces no stamping-induced stress, warping, or burrs that compromise sealing. It allows for more complex, finer channels, eliminates high-cost hard tooling, and enables effortless, low-cost design changes.
• Q: Can you produce plates with different flow field patterns on each side?
  A: Yes, our process can easily create anode and cathode patterns with different geometries on a single plate (bipolar design) with high alignment accuracy.
• Q: Do you provide coated bipolar plates?
  A: We specialize in the precision etching of the base plates. We can supply uncoated, cleaned plates ready for coating, or work seamlessly with your specified coating partners as part of a integrated supply chain.
• Q: What is your capability for large-format plates?
  A: Our equipment can handle large sheet sizes. Please consult our engineering team with your specific active area dimensions and thickness requirements for feasibility.

Easy to order! 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.