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

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

• 100% automated optical inspection (AOI)

• Material certs: EN 10204 3.1, ASTM standards

• Ex-situ/in-situ corrosion testing

• 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