Photochemical Machining Half Etching Metallic Bipolar Plate For Hydrogen Fuel Cell

Half Etching Metallic Bipolar Plate For Hydrogen Fuel Cell 

The metallic bipolar plate distributes reactant gases, ensures efficient electron conduction, and optimizes flow channel design with corrosion-resistant metal materials, providing durable and cost-effective performance for fuel cells.

Specifications of Half Etching Metallic Bipolar Plate

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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

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                                                                                      1. Material selection (stainless steel/titanium)

                                                                                      2. Surface cleaning

                                                                                      3. Photoresist coating 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. 

Different shapes of Metallic Bipolar Plates for Hydrogen Fuel Cell

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How to custom Metallic Bipolar Plate from us?

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

                                                                                          2. Samples making lead time:3-10 days

                                                                                          3. Express:By DHL, FedEx, UPS, Air or Sea.