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Metallic Bipolar Plates are the pathway to mass commercialisation

Bipolar Plates are a critical component of hydrogen fuel cells, representing up to 80% of a fuel cell stack's weight and 50% of cost.

Metallic bipolar plates are the technology of choice for the mass production of fuel cells due to its ability to enable a smaller form factor, weight and scales well with mass-production techniques.

However, metallic bipolar plates easily degrade and passivate in fuel cells, leading to severe reduction performance over its lifespan.

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SydroDIAMOND®: Metallic Bipolar Plate Coatings for PEM Fuel Cells

SydroDIAMOND® is a precious metal-free bipolar plate coating that enhances material conductivity and protects substrate materials from passivation.

SydroDIAMOND® is commercialised and in-production for SUS 316L, SUS 304 and Titanium substrates using our unique Filtered Cathodic Vacuum Arc (FCVA) coating technology.

SydroDIAMOND® Coating

Smooth, uniform coatings using FCVA

Alternative Carbon

Rougher coatings susceptible to

degradation by conventional PVD

Verified to maintain high Fuel Cell Current Density

SydroDIAMOND® has been demonstrated to maintain a high Fuel Cell current density with lower degradation compared to a reference gold material. 

These were tested under cyclical Accelerated Stress Test (AST) conditions.

The AST was conducted by third-party German research institute Zentrum für BrennstoffzellenTechnik GmbH (ZBT), a leading fuel cell research institute in Duisberg, Germany.



  • Aqueous​

  • Acid & Alkaline

  • Hydrocarbon


  • Filtered Cathodic Vacuum Arc Technology

  • Unique Tetrahedral Amorphous Carbon Coating

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  • Form-in-Place (FIP)

  • Liquid Silicone Rubber (LSR) injection molding

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•Automated Machine vision solution deploying in 2024

•Quality control of incoming and outgoing bipolar plates

Full Spectrum of Capabilities for a Complete Bipolar Plate Solution

SydroDIAMOND® Brochure

Click here to download the PDF (English)

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