High Precision Etched Bipolar Plates for Fuel Cells & Electrolyzers
Bipolar Plates Overview
Xinhsen's chemically etched bipolar plates deliver superior performance in fuel cells, electrolyzers, and flow batteries. Our photochemical etching technology enables complex micro-flow patterns with unmatched precision, optimizing gas/liquid distribution while minimizing pressure drop. These plates are critical for improving energy efficiency in hydrogen applications.
Key Advantages
✔ Ultra-thin designs (0.1-2.0mm) with high structural integrity
✔ Corrosion-resistant surfaces for acidic/alkaline environments
✔ Custom flow field patterns (serpentine, interdigitated, biomimetic)
✔ Zero mechanical stress vs. stamped/laser-cut alternatives
✔ Rapid prototyping → mass production transition
Bipolar Plates Specifications
| Parameter | Specification | Tolerance/Capability |
| Materials | 316L SS, Titanium, Nickel Alloys, Graphite Composites | Custom materials available |
| Thickness | 0.1mm - 5.0mm | ±0.01mm (critical features) |
| Channel Width | 0.2mm - 3.0mm | ±0.015mm |
| Channel Depth | 0.15mm - 2.5mm | ±0.02mm |
| Surface Roughness | Ra 0.1-1.6μm (mirror polish optional) | Electropolishing available |
| Flatness | ≤0.05mm/100mm | Laser leveled upon request |
| Active Area | 5cm² - 5000cm² | Modular stacking designs |
| Electrical Conductivity | >1000 S/cm (metallic plates) | Coatings for enhancement |
Design Features
• Flow Patterns: Serpentine, parallel, pin-type, 3D complex architectures
• Integrated Features: Cooling channels, sensor ports, alignment pins
• Coatings: Conductive ceramics, hydrophobic treatments, anti-fouling layers
• Post-Processing: Laser welding prep, embossed seals, QC markings
Performance Data
◈ 10-15% lower pressure drop vs. conventional designs
◈ >98% current collection efficiency
◈ Compatible with 2-5x compression stacking
◈ 5000+ hour lifespan in PEMFC accelerated tests
Applications
▸ Hydrogen Fuel Cells (PEMFC, SOFC, DMFC)
▸ Water Electrolyzers (PEM, AEM, alkaline)
▸ Redox Flow Batteries (VRFB, Zn-Br systems)
▸ CO₂ Conversion Systems
▸ Laboratory-on-chip devices
Quality Assurance
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100% automated optical inspection (AOI)
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Material certs: EN 10204 3.1, ASTM standards
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Ex-situ/in-situ corrosion testing
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ISO 9001 & IATF 16949 compliant
Customization Options
✓ CFD-optimized flow fields
✓ Hybrid metal/graphite designs
✓ Pre-assembled plate stacks
✓ Rapid prototyping (5-7 day samples)
Why Xinhsen?
• 50μm feature precision for optimal fluid dynamics
• 10,000+ plates/month production capacity
• DFM support for cost-effective scaling
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High Precision Etched Bipolar Plates For Fuel Cells Electrolyzers Images
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