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  • Are metallic bipolar plates possible for an air cooled, closed-cathode PEMFC?

    Posted by Matthew Hartless on June 22, 2023 at 14:16

    Hello everyone,

    There’s a lack of publications for the closed cathode design in general, however this configuration is beneficial in aviation at 10,000 meters altitude due to the need to compress the reactant air while sufficiently controlling the cooling, and from what I’ve seen metallic BPs can be more efficient than traditional graphite BPs, just less durable. Though I cannot wrap my head around how this could be manufactured. Any thoughts or references would be greatly appreciated.


    Francois-Eudes RUCHON replied 11 months ago 4 Members · 4 Replies
  • 4 Replies
  • Roger Penn

    June 28, 2023 at 12:06

    Air cooled stack with closed cathode have existed for a long time (e.g. Nexa Module). They are carbon, mostly for the flexibility of making different size (cross-section) flow-fields (want the cooling field large and others smaller for pressure drop). This should be possible with metal plates, but some of the geometries may be restricted due to forming limitations with metal.

    I have photos of the stack and the carbon plate, but not sure how to attach to this response.

    • Jerryn Joy

      July 3, 2023 at 06:04

      Hello Roger,
      Thank you very much for engaging!
      You can attach the required pictures by clicking on the “Camera” icon on the bottom left of the pop-up screen while replying. You can also attach files there if needed.

      • Roger Penn

        July 27, 2023 at 19:56

        Hi Jerryn Joy,

        I only see a box for ‘Notify me of new replies’ in the bottom left of the reply pop up screen. There is no camera icon. Please check.

  • Francois-Eudes RUCHON

    July 28, 2023 at 12:35

    If I’m not mistaking, Hyundai has such design.

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