Shenzhen Xinhaisen Technology Limited
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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:
| Item | Customized Metal Bipolar Plate/ Stainless Steel Flow Plate |
| Material | Stainless steel 201,202,304,316,410 etc./ Aluminum/ Copper/ Brass/ Steel alloy/ Titanium/ Various kinds of material can be chosen |
| Thickness | 0.02mm - 3mm according to different request |
| Minimum single part | 1mm*1mm |
| Maximum single part | 1500mm*650mm |
| Surface Treatment | Polishing,brushing,electroplating,nickel plating,anodizing,etc... |
| Characteristics | Outstanding corrosion resistance Light-weight Very good strength and hardness Excellent thermal conductivity High electrical conductivity Burr free and clean Full recyclability |
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.