Evaluation of ionomer distribution on porous carbon aggregates in catalyst layers of polymer electrolyte fuel cells
Understanding ionomer distribution properties that facilitate proton conduction and oxygen transfer to Pt particles in the cathode catalyst layer (CCL) of the polymer electrolyte fuel cell (PEFC) is essential for optimized design of CCL with high cell performance. In this study, the model structure...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-05-01
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| Series: | Journal of Power Sources Advances |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666248522000142 |
| _version_ | 1817980030585667584 |
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| author | Kayoung Park Ruijing Gao Magnus So Tae Hyoung Noh Naoki Kimura Yoshifumi Tsuge Gen Inoue |
| author_facet | Kayoung Park Ruijing Gao Magnus So Tae Hyoung Noh Naoki Kimura Yoshifumi Tsuge Gen Inoue |
| author_sort | Kayoung Park |
| collection | DOAJ |
| description | Understanding ionomer distribution properties that facilitate proton conduction and oxygen transfer to Pt particles in the cathode catalyst layer (CCL) of the polymer electrolyte fuel cell (PEFC) is essential for optimized design of CCL with high cell performance. In this study, the model structure of Ketjen black (KB) as porous carbon was numerically simulated. After validating the model, the relationship between the weight ratio of ionomer/carbon (I/C) and ionomer coverage was investigated. Moreover, relative proton conductivity of simulated KB was compared with the reference data of Vulcan XC-72 (VB) as non-porous carbon. Under the same I/C ratio conditions, ionomer coverage significantly differed depending on the carbon support. Moreover, under the same carbon volume ratio conditions, simulated KB exhibited lower relative proton conductivity than VB because simulated KB had the lower ionomer volume ratio than that of simulated VB. The relationship between ionomer content and ionomer properties differ depending on the carbon support. The results of our study can contribute to designing an optimal catalyst layer. |
| first_indexed | 2024-04-13T22:49:21Z |
| format | Article |
| id | doaj.art-7b2f8775c31f48f8b5e6db53d1ea7dc8 |
| institution | Directory Open Access Journal |
| issn | 2666-2485 |
| language | English |
| last_indexed | 2024-04-13T22:49:21Z |
| publishDate | 2022-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Power Sources Advances |
| spelling | doaj.art-7b2f8775c31f48f8b5e6db53d1ea7dc82022-12-22T02:26:16ZengElsevierJournal of Power Sources Advances2666-24852022-05-0115100096Evaluation of ionomer distribution on porous carbon aggregates in catalyst layers of polymer electrolyte fuel cellsKayoung Park0Ruijing Gao1Magnus So2Tae Hyoung Noh3Naoki Kimura4Yoshifumi Tsuge5Gen Inoue6Department of Chemical Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, JapanDepartment of Chemical Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, JapanDepartment of Chemical Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, JapanDepartment of Chemical Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, JapanDepartment of Chemical Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, JapanDepartment of Chemical Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, JapanCorresponding author.; Department of Chemical Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, JapanUnderstanding ionomer distribution properties that facilitate proton conduction and oxygen transfer to Pt particles in the cathode catalyst layer (CCL) of the polymer electrolyte fuel cell (PEFC) is essential for optimized design of CCL with high cell performance. In this study, the model structure of Ketjen black (KB) as porous carbon was numerically simulated. After validating the model, the relationship between the weight ratio of ionomer/carbon (I/C) and ionomer coverage was investigated. Moreover, relative proton conductivity of simulated KB was compared with the reference data of Vulcan XC-72 (VB) as non-porous carbon. Under the same I/C ratio conditions, ionomer coverage significantly differed depending on the carbon support. Moreover, under the same carbon volume ratio conditions, simulated KB exhibited lower relative proton conductivity than VB because simulated KB had the lower ionomer volume ratio than that of simulated VB. The relationship between ionomer content and ionomer properties differ depending on the carbon support. The results of our study can contribute to designing an optimal catalyst layer.http://www.sciencedirect.com/science/article/pii/S2666248522000142Polymer electrolyte fuel cellsCatalyst layerPorous carbonCarbon aggregate structureIonomer distributionSimulation |
| spellingShingle | Kayoung Park Ruijing Gao Magnus So Tae Hyoung Noh Naoki Kimura Yoshifumi Tsuge Gen Inoue Evaluation of ionomer distribution on porous carbon aggregates in catalyst layers of polymer electrolyte fuel cells Journal of Power Sources Advances Polymer electrolyte fuel cells Catalyst layer Porous carbon Carbon aggregate structure Ionomer distribution Simulation |
| title | Evaluation of ionomer distribution on porous carbon aggregates in catalyst layers of polymer electrolyte fuel cells |
| title_full | Evaluation of ionomer distribution on porous carbon aggregates in catalyst layers of polymer electrolyte fuel cells |
| title_fullStr | Evaluation of ionomer distribution on porous carbon aggregates in catalyst layers of polymer electrolyte fuel cells |
| title_full_unstemmed | Evaluation of ionomer distribution on porous carbon aggregates in catalyst layers of polymer electrolyte fuel cells |
| title_short | Evaluation of ionomer distribution on porous carbon aggregates in catalyst layers of polymer electrolyte fuel cells |
| title_sort | evaluation of ionomer distribution on porous carbon aggregates in catalyst layers of polymer electrolyte fuel cells |
| topic | Polymer electrolyte fuel cells Catalyst layer Porous carbon Carbon aggregate structure Ionomer distribution Simulation |
| url | http://www.sciencedirect.com/science/article/pii/S2666248522000142 |
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