Investigation of Gradient Platinum Loading and Porosity Distribution for Anion Exchange Membrane Fuel CellsSource: Journal of Electrochemical Energy Conversion and Storage:;2022:;volume( 020 ):;issue: 004::page 41001-1DOI: 10.1115/1.4056029Publisher: 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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contributor author | Mousa, Hassan | |
contributor author | Xing, Lei | |
contributor author | Das, Prodip K. | |
date accessioned | 2023-11-29T19:02:19Z | |
date available | 2023-11-29T19:02:19Z | |
date copyright | 11/11/2022 12:00:00 AM | |
date issued | 11/11/2022 12:00:00 AM | |
date issued | 2022-11-11 | |
identifier issn | 2381-6872 | |
identifier other | jeecs_20_4_041001.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4294535 | |
description 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. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Investigation of Gradient Platinum Loading and Porosity Distribution for Anion Exchange Membrane Fuel Cells | |
type | Journal Paper | |
journal volume | 20 | |
journal issue | 4 | |
journal title | Journal of Electrochemical Energy Conversion and Storage | |
identifier doi | 10.1115/1.4056029 | |
journal fristpage | 41001-1 | |
journal lastpage | 41001-12 | |
page | 12 | |
tree | Journal of Electrochemical Energy Conversion and Storage:;2022:;volume( 020 ):;issue: 004 | |
contenttype | Fulltext |