An improved hydrophobic coating for the porous gas diffusion layer in a PEM-based electrochemical hydrogen pump to mitigate anode flooding
Anode flooding is a critical issue in proton exchange membrane (PEM)-based electrochemical hydrogen pumps. Water-proofing the gas diffusion layer (GDL) on the anode side is a highly effective approach to mitigate the flooding problem and to enhance hydrogen pump performance. In this study, we report...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-08-01
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| Series: | Electrochemistry Communications |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1388248120301284 |
| _version_ | 1818148749816365056 |
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| author | Myoungseok Lee Xinyu Huang |
| author_facet | Myoungseok Lee Xinyu Huang |
| author_sort | Myoungseok Lee |
| collection | DOAJ |
| description | Anode flooding is a critical issue in proton exchange membrane (PEM)-based electrochemical hydrogen pumps. Water-proofing the gas diffusion layer (GDL) on the anode side is a highly effective approach to mitigate the flooding problem and to enhance hydrogen pump performance. In this study, we report a low-cost, wet chemical process for water-proofing a metallic GDL. Silver particles, used as roughening and bonding agents, were first deposited on the porous metallic gas diffusion medium, and then heptadecafluoro-1-decanethiol (HDFT) was applied as a hydrophobic surface modifier. The result was a super-hydrophobic porous metallic GDL. Real electrochemical pump cell tests under simulated flooding conditions revealed that the water management performance of the coated GDL was dramatically improved. |
| first_indexed | 2024-12-11T12:56:06Z |
| format | Article |
| id | doaj.art-9032a680cc8f453c80deae2ba621f046 |
| institution | Directory Open Access Journal |
| issn | 1388-2481 |
| language | English |
| last_indexed | 2024-12-11T12:56:06Z |
| publishDate | 2020-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj.art-9032a680cc8f453c80deae2ba621f0462022-12-22T01:06:34ZengElsevierElectrochemistry Communications1388-24812020-08-01117106777An improved hydrophobic coating for the porous gas diffusion layer in a PEM-based electrochemical hydrogen pump to mitigate anode floodingMyoungseok Lee0Xinyu Huang1Department of Mechanical Engineering, University of South Carolina, Columbia, SC 29208, USACorresponding author.; Department of Mechanical Engineering, University of South Carolina, Columbia, SC 29208, USAAnode flooding is a critical issue in proton exchange membrane (PEM)-based electrochemical hydrogen pumps. Water-proofing the gas diffusion layer (GDL) on the anode side is a highly effective approach to mitigate the flooding problem and to enhance hydrogen pump performance. In this study, we report a low-cost, wet chemical process for water-proofing a metallic GDL. Silver particles, used as roughening and bonding agents, were first deposited on the porous metallic gas diffusion medium, and then heptadecafluoro-1-decanethiol (HDFT) was applied as a hydrophobic surface modifier. The result was a super-hydrophobic porous metallic GDL. Real electrochemical pump cell tests under simulated flooding conditions revealed that the water management performance of the coated GDL was dramatically improved.http://www.sciencedirect.com/science/article/pii/S1388248120301284Hydrogen pumpGas diffusion layerHydrophobic coatingAnode floodingSuper-hydrophobic surface |
| spellingShingle | Myoungseok Lee Xinyu Huang An improved hydrophobic coating for the porous gas diffusion layer in a PEM-based electrochemical hydrogen pump to mitigate anode flooding Electrochemistry Communications Hydrogen pump Gas diffusion layer Hydrophobic coating Anode flooding Super-hydrophobic surface |
| title | An improved hydrophobic coating for the porous gas diffusion layer in a PEM-based electrochemical hydrogen pump to mitigate anode flooding |
| title_full | An improved hydrophobic coating for the porous gas diffusion layer in a PEM-based electrochemical hydrogen pump to mitigate anode flooding |
| title_fullStr | An improved hydrophobic coating for the porous gas diffusion layer in a PEM-based electrochemical hydrogen pump to mitigate anode flooding |
| title_full_unstemmed | An improved hydrophobic coating for the porous gas diffusion layer in a PEM-based electrochemical hydrogen pump to mitigate anode flooding |
| title_short | An improved hydrophobic coating for the porous gas diffusion layer in a PEM-based electrochemical hydrogen pump to mitigate anode flooding |
| title_sort | improved hydrophobic coating for the porous gas diffusion layer in a pem based electrochemical hydrogen pump to mitigate anode flooding |
| topic | Hydrogen pump Gas diffusion layer Hydrophobic coating Anode flooding Super-hydrophobic surface |
| url | http://www.sciencedirect.com/science/article/pii/S1388248120301284 |
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