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Standards Development
The document covers the test methods of bipolar plates used in proton exchange membrane fuel cell stacks for stationary, portable, and motive fuel cell power systems.
The document applies to both graphite bipolar plates and metallic bipolar plates.
A bipolar plate is a key component of PEFCs. Its impact on the performance and lifetime of PEFCs is crucial, and thus it receives more and more attention worldwide. A bipolar plate is formed by binding or laser weldingof an anodic and a cathodic singular plate together. Based on the materials, there are graphite bipolar plates and metallic bipolar plates, each has advantages and disadvantages.
The key factors influencing the performance and lifetime of a bipolar plate include Permeability, Electric resistance, Mechanical strength, Corrosion resistance, Coating adhesion, Leachable contaminants, Effective area percentage, Flatness, Warpage, Fluid pressure drop, Channel depth/width, Contact resistance, and Surface hydrophilicity.
Globally, there are some scattered test methods, and China has published several related national and organizational standards. The importance and necessity of establishing unified and reliable methods for testing those properties are obvious.
With such a good foundation, the participation and support of the TC105 delegates, along with the need and inputs from the industry, drafting the proposed IEC international standard is doable and justified.
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