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Thread: Solid oxide fuel cells catalyst

  1. #1 Solid oxide fuel cells catalyst 
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    1)It`s widely known that in PEM fuel cells platinum is usually used as a catalyst.
    What catalyst is used in Solid oxide fuel cells (SOFC) to create negative oxygen ions?
    If I no make mistake high temperatures are needed to make membrane to function only?

    2)Is there some way to create negative oxygen ion generator without high voltage electricity?For example some chemical catalyst that could ionize oxygen at room temperatures?

    3)What catalyst is used in SOFC to make negative oxygen ions to combine with hydrogen and release electrons?

    4)What is a best way to ionize as much as possible oxygen molecules and get lots of oxygen ions in gaseous form?Is there some way to ionize 90% of air that is passing by some catalyst or filter?Will some ion gun succeed for this purpose?


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  3. #2  
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    I am not an expert on this, but I recently learned about fast-ion conductors. In order to conduct O2- ions quickly, yttrium-stabilized zirconia is used. Yttrium is 3+, while Zr is 4+. Doping zirconia with yttrium generates O2- vacancies, which leads to a higher mobility in oxygen. Does this help at all?


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  4. #3  
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    Does this help at all?
    I`m affraid that not completely because what you are talking about is ionic conductor which conducts oxygen ions.One of my questions was on how it ionizes neutral oxygen molecule to convert it into oxygen ion and only after that to conduct it.In the beginning we have neutral oxygen molecules which serve as an oxydizer.
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