Tech Talk - Hydrogen Fuel Cell, PEM & AEM Electrolyzer Membranes - Hyfindr Wu

[@hyfindr]

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[@marcelloromagnoli5943]

Membranes are also used in electrochemical compressors for hydrogen. The efficient compression of hydrogen is important due to their low volumetric energy density. Electrochemical compressors are efficient compressors and purifiers of H2

[@akashk.v1291]

Hello Tim and Steven, Thanks for sharing this wonderful informative video. I am a little confused with the fuel cell layout displayed in the 12th minute. In a fuel cell reactants, hydrogen gas flows through the anode and oxygen flows through the cathode. Here in that slide the reactions are represented differently. Is that a mistake?

[@MsRosHD]

They mixed up electrolyzers with fuel cells, in my opinion. I googled the image, and the reactions weren't displayed, so they added them but did it wrong

[@AlexA-tl6kg]

Would a billion of these fuel cells running at once change the balance of the various gases containing oxygen? (Oxygen, Ozone, Carbon dioxide, etc)

[@davidtadic4716]

Could lower flow, greater in quantity of AEM-s compensate for fever PEM groups?

[@TimW-Hyproof]

Hi, thank you for your question. Higher flow rates could result in better electrochemical properties while lower flow rates could increase the lifetime of the membrane. This would apply to both PEM and AEM. With precious/costly/rare metals being the limiting factor for PEM technology, AEM technology, which uses more common metals and catalysts, is where we see the future of electrolyzer technology headed. Hope that helps! - Tim

[@davidtadic4716]

Thank you.

[@shubhamsaxena9976]

Can’t the same membrane work for compression? And what would be the pressure output of compression? Lesser or bigger than 1000psig.

[@TimW-Hyproof]

Hi, thank you for your question. The PEM or AEM membranes may be used for compression depending on the set up and desired effect. As for pressure, our membranes with the thicker width's have been tested to withstand up to 35 bar or more which is equivalent to 507 PSI or more. Hope that helps! - Tim

[@AlexA-tl6kg]

What the heck? The PEM splits water into 3 parts (oxygen, hydrogen proton, and hydrogen electron) then routes them in 3 separate directions only to join back the hydrogen components on the other side? (1) How does it do that? (2) Why split the electron off from the proton? (3) If one of the byproducts is hydrogen then can't this system just be primed with a minimal amount of water and then keep reusing the same hydrogen?

[@MsRosHD]

What do you mean by reusing hydrogen? Hydrogen is the product you want to obtain afterwards. The point of the electrolyzer is not to use the energy to turn on a bulb, for example; it is to produce hydrogen..

[@AlexA-tl6kg]

@@MsRosHD This video was not clear and seemed like the fuel cell had a hydrogen byproduct which sounded wrong and like a perpetual motion machine... now I see they were talking about the electrolyzer and that the membrane is used for both the electrolyzer and fuel cell. There is another interview/video of a different guy from hyfindr which is more clear.