Custom Etched Metal Bipolar Plates for Japanese Fuel Cell & Battery Stacks

Product Overview

Xinhaisen’s precision-etched bipolar plates are key parts for proton exchange membrane fuel cells (PEMFC) and electrolyzers. Using advanced chemical etching, we produce ultra-flat, corrosion-resistant plates with complex flow field designs. Our process ensures burr-free, stress-free plates ideal for efficient gas distribution and current collection.

What Is Chemical Etching?

Chemical etching (also known as photochemical etching) is a subtractive manufacturing process that uses controlled chemical solutions to dissolve metal through photoresist patterns. Unlike stamping or machining, etching:

• Leaves no burrs or heat-affected zones

• Does not change metal properties

• Allows rapid prototyping without tooling costs

• Handles complex, fine features with high repeatability

Product Features

• High precision – Minimum line width down to 0.015mm, accuracy up to ±0.01mm

• Ultra-thin capability – From 0.5mm to 3.0mm thickness

• Custom flow field designs – Straight, interdigitated, or pin-type channels

• Material options – Stainless steel (304, 316L), titanium, nickel alloys

• Burr-free & flat – No secondary deburring needed

• Corrosion resistant – Ideal for acidic fuel cell environment

• Cost-effective for medium to high volumes – No expensive hard tooling

Product Specifications

Applications

• Proton Exchange Membrane Fuel Cells (PEMFC) – Hydrogen vehicles, backup power

• Electrolyzers – Green hydrogen production

• Portable power systems – Drones equipment

• Stationary fuel cells – Residential or industrial cogeneration

Why Choose Xinhaisen?

• Rapid response – Quick sampling for R&D and pilot projects

• High quality – ISO9001-compliant processes, strict inspection

• Material expertise – Strong supply chain for various alloys

• Flexible order quantity – From dozens to millions of pieces

• Proven experience – Serving automotive, medical, optical, and electronics sectors

• Fast lead time – No tooling fabrication delays

Frequently Asked Questions (FAQ)

• Q: Can you produce bipolar plates with custom flow field patterns?
  A: Yes. We work from your CAD or Gerber files. Any flow field geometry is possible.
• Q: Is there any burr or deformation after etching?
  A: No. Chemical etching produces burr-free, stress-free plates without mechanical deformation.
• Q: What thickness do you recommend for PEMFC bipolar plates?
  A: Typically 0.5mm – 3.0mm for stainless steel. We can advise based on your application.
• Q: Do you offer coating or surface treatment?
  A: We mainly provide bare etched plates, but can coordinate with partners for conductive or anti-corrosion coatings.
• Q: What is your MOQ (Minimum Order Quantity)?
  A: No fixed MOQ. We welcome prototypes (even 10–20 pieces) and large production orders.

Welcome to contact us at any time!