Precision Etching Metallic Bipolar Plates for Fuel Cell Electrolyzers

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 Specification

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.

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