Half Photo Etching Stainless Steel Energy Car Battery Hydrogen Fuel Cell Bipolar Plate

Descriptions of Fuel Cell Bipolar Plate:

The bipolar plate distributes reactant gases, conducts electrons, and optimizes flow channels via corrosion-resistant materials (graphite/coated metals) for durable, cost-effective fuel cell performance.

Specifications of Fuel Cell Bipolar Plate Etching:

Etching creates precise flow channel patterns in bipolar plates, optimizing gas diffusion and reducing pressure drops. This subtractive method ensures uniform geometry to enhance flow efficiency and electrochemical performance while maintaining material conductivity. It enables corrosion-resistant materials (e.g., stainless steel/coated metals) and supports scalable production with balanced cost-durability for sustained fuel cell operation.

The production process of chemically etched bipolar plates:

1) Material selection (stainless steel/titanium);

2) Surface cleaning;

3) Photoresist coating and UV masking to define flow channel patterns;

4) Exposing and Developing;

5) Chemical etching to dissolve exposed areas;

6) Post-processing (resist removal, residue neutralization);

7) Quality inspection.

Precise control of etching parameters (time, temperature, concentration) ensures uniform channel geometry for optimized gas distribution, conductivity, and corrosion resistance while maintaining structural integrity. This method supports scalable, cost-efficient mass production.

Xinhaisen can photo etch custom different shapes PCHE / Bipolar Plate, belows are some bipolar plates we did before for reference:

How to etching custom Bipolar Plate?

1. Please send us your design.
We accept the following file formats:DWG, DXF, PDF, Step, Gerber, IGES, CorelDraw and Adobe Illustrator

2. Samples making lead time:3-10days

3. Express:By DHL, FedEx, TNT, around 3-7days.