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    Investigation of Gradient Platinum Loading and Porosity Distribution for Anion Exchange Membrane Fuel Cells

    Source: Journal of Electrochemical Energy Conversion and Storage:;2022:;volume( 020 ):;issue: 004::page 41001-1
    Author:
    Mousa, Hassan
    ,
    Xing, Lei
    ,
    Das, Prodip K.
    DOI: 10.1115/1.4056029
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Anion exchange membrane fuel cells (AEMFCs) are in development as a low-cost alternative to proton exchange membrane fuel cells (PEMFCs). AEMFCs produce water at the anode side and consume it at the cathode side, resulting in no cathode water flooding like in PEMFCs. However, it brings complexity to water transportation behavior and requires appropriate water balance to avoid membrane drying out. In this study, a two-dimensional two-phase multi-physics model has been developed to investigate the impacts of three key electrode parameters (porosity, catalyst loading, and ionomer content) that are responsible for water production and transport as well as the performance of an AEMFC. A piecewise constant function along the x-direction (reactant diffusion direction) is used to apply the gradient on the porosity and platinum loading. The present results show that a larger porosity gradient near the cathode gas diffusion layer (GDL)/flow channel interface and lower near the GDL/microporous layer (MPL) interface can enhance mass transport and water removal, which is benefited the AEMFC performance. However, anode GDL porosity gradients show a lower AEMFC performance compared to the cathode porosity gradients. Moreover, it was confirmed that for both electrodes, the performance of AEMFC was significantly dependent on each electrode parameter.
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      Investigation of Gradient Platinum Loading and Porosity Distribution for Anion Exchange Membrane Fuel Cells

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    contributor authorMousa, Hassan
    contributor authorXing, Lei
    contributor authorDas, Prodip K.
    date accessioned2023-11-29T19:02:19Z
    date available2023-11-29T19:02:19Z
    date copyright11/11/2022 12:00:00 AM
    date issued11/11/2022 12:00:00 AM
    date issued2022-11-11
    identifier issn2381-6872
    identifier otherjeecs_20_4_041001.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4294535
    description abstractAnion exchange membrane fuel cells (AEMFCs) are in development as a low-cost alternative to proton exchange membrane fuel cells (PEMFCs). AEMFCs produce water at the anode side and consume it at the cathode side, resulting in no cathode water flooding like in PEMFCs. However, it brings complexity to water transportation behavior and requires appropriate water balance to avoid membrane drying out. In this study, a two-dimensional two-phase multi-physics model has been developed to investigate the impacts of three key electrode parameters (porosity, catalyst loading, and ionomer content) that are responsible for water production and transport as well as the performance of an AEMFC. A piecewise constant function along the x-direction (reactant diffusion direction) is used to apply the gradient on the porosity and platinum loading. The present results show that a larger porosity gradient near the cathode gas diffusion layer (GDL)/flow channel interface and lower near the GDL/microporous layer (MPL) interface can enhance mass transport and water removal, which is benefited the AEMFC performance. However, anode GDL porosity gradients show a lower AEMFC performance compared to the cathode porosity gradients. Moreover, it was confirmed that for both electrodes, the performance of AEMFC was significantly dependent on each electrode parameter.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleInvestigation of Gradient Platinum Loading and Porosity Distribution for Anion Exchange Membrane Fuel Cells
    typeJournal Paper
    journal volume20
    journal issue4
    journal titleJournal of Electrochemical Energy Conversion and Storage
    identifier doi10.1115/1.4056029
    journal fristpage41001-1
    journal lastpage41001-12
    page12
    treeJournal of Electrochemical Energy Conversion and Storage:;2022:;volume( 020 ):;issue: 004
    contenttypeFulltext
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