Bipolar Plate Overview
Xinhaisen specializes in the high-precision chemical etching of metallic bipolar plates, a critical part in fuel cells and electrolyzers. Our advanced etching technology enables the mass production of complex, ultra-fine flow field patterns on thin metal sheets with exceptional consistency and speed, meeting the demanding requirements of next-generation energy applications.

Manufacturing Process

• Material Preparation: Selection and cleaning of premium metal substrates (e.g., stainless steel, titanium).

• Photoresist Application: Coating with a light-sensitive film.

• Precision Exposure: Transferring the digital flow field design onto the plate using UV light.

• Chemical Etching: Controlled etching to remove unprotected areas, forming precise channels and features.

• Cleaning & Finishing: Thorough cleaning, followed by optional post-processing (e.g., coating for enhanced conductivity/corrosion resistance).

• Quality Inspection: 100% dimensional and visual inspection using advanced measurement systems.

Bipolar Plate Features

• Ultra-High Precision: Capable of producing extremely fine flow channels, micro-features, and uniform geometries.

• Burr-Free & Stress-Free: The etching process creates smooth surfaces and edges without mechanical stress or burrs, crucial for sealing and performance.

• Design Flexibility: Rapid prototyping and design changes without costly tooling modifications. Ideal for complex, multi-scale flow field patterns.

• Material Versatility: Processes various corrosion-resistant alloys suitable for harsh fuel cell/electrolyzer environments.

• Scalability & Speed: Seamlessly scales from prototypes to ultra-high-volume orders with fast lead times.

Bipolar Plate Specifications

Bipolar Plate Applications
Our etched bipolar plates are essential parts in:

• Proton Exchange Membrane Fuel Cells (PEMFCs)

• Solid Oxide Fuel Cells (SOFCs)

• Water Electrolyzers (PEM, AEM)

• Flow Batteries

• Other advanced energy conversion and storage systems

Our Advantages

• Unmatched Speed: From design to delivery, we excel in rapid response and fast mass production.

• High Precision & Consistency: Industry-leading tolerances and uniformity across high-volume batches.

• High-Volume Capacity: Reliably handle sudden, large-volume orders without compromising quality.

• Comprehensive Expertise: Deep knowledge in etching for diverse sectors (communications, medical, automotive, optics) ensures robust problem-solving for energy applications.

• Established Reputation: Trusted by clients for high quality, precision, variety, and reliable service.

FAQ

• What file format do you require for the flow field design?
  We prefer CAD files (e.g., .dxf, .dwg) or Gerber files for optimal precision.

• Can you provide coated or treated bipolar plates?
  Yes. We offer post-etching processes, including precious metal coatings (e.g., gold, silver) and other conductive/corrosion-resistant treatments through trusted partners.

• What is your minimum order quantity (MOQ) for prototypes?
  We support low-MOQ prototype projects to help you test and validate designs.

• How do you ensure quality control?
  Every batch undergoes strict in-process and final inspection using optical measuring equipment, profilometers, and other gauges to verify all dimensional and surface specifications.

• What are your main material recommendations for PEMFC bipolar plates?
  316L stainless steel is a common, cost-effective choice. We also highly recommend and process titanium for superior corrosion resistance in demanding environments.

Welcome to contact us at any time!