Preparation process of graphite-based composite bipolar plate by vacuum impregnation
The vacuum impregnation resin method was used to prepare composite bipolar plates in fuel cell in this study. The effects of the content of epoxy resin diluent added, temperature and pore structure of graphite on the impregnation content during the vacuum impregnation process were studied. The elect...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2024-03-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2023.000276 |
| _version_ | 1797243102340055040 |
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| author | ZHAN Zize ZHENG Junsheng FAN Runlin YAO Dongmei CHEN Jing MING Pingwen |
| author_facet | ZHAN Zize ZHENG Junsheng FAN Runlin YAO Dongmei CHEN Jing MING Pingwen |
| author_sort | ZHAN Zize |
| collection | DOAJ |
| description | The vacuum impregnation resin method was used to prepare composite bipolar plates in fuel cell in this study. The effects of the content of epoxy resin diluent added, temperature and pore structure of graphite on the impregnation content during the vacuum impregnation process were studied. The electrical conductivity, flexural strength and airtightness of the prepared fuel cell bipolar plates were investigated. The results show that increasing the content of diluent and temperature can reduce viscosity and increase the upper limit of resin impregnation, enabling the resin to impregnate and fill into smaller pores, while there are still some pores that cannot be filled and saturated, such as the pores below 0.1 μm are difficult to fully penetrate in the expanded graphite plate, resulting in the resin being unable to completely fill the entire pores of the expanded graphite. The optimal temperature for impregnating the epoxy resin/diluent system by vacuum impregnation is 50 ℃, and the optimal addition ratio of diluent ethylene glycol diglycidyl ether is 15%(mass fraction). The obtained bipolar plate has excellent electrical conductivity of 340.12 S/cm, flexural strength of 41.52 MPa, and helium permeability of 5.4×10-7 cm3·cm-2·s-1. |
| first_indexed | 2024-04-24T18:49:47Z |
| format | Article |
| id | doaj.art-966977cdb3b84004acd120f8bc087593 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 |
| language | zho |
| last_indexed | 2024-04-24T18:49:47Z |
| publishDate | 2024-03-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-966977cdb3b84004acd120f8bc0875932024-03-27T03:28:07ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43812024-03-01523445110.11868/j.issn.1001-4381.2023.00027620240305Preparation process of graphite-based composite bipolar plate by vacuum impregnationZHAN Zize0ZHENG Junsheng1FAN Runlin2YAO Dongmei3CHEN Jing4MING Pingwen5Clean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, ChinaClean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, ChinaClean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, ChinaClean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, ChinaClean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, ChinaClean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, ChinaThe vacuum impregnation resin method was used to prepare composite bipolar plates in fuel cell in this study. The effects of the content of epoxy resin diluent added, temperature and pore structure of graphite on the impregnation content during the vacuum impregnation process were studied. The electrical conductivity, flexural strength and airtightness of the prepared fuel cell bipolar plates were investigated. The results show that increasing the content of diluent and temperature can reduce viscosity and increase the upper limit of resin impregnation, enabling the resin to impregnate and fill into smaller pores, while there are still some pores that cannot be filled and saturated, such as the pores below 0.1 μm are difficult to fully penetrate in the expanded graphite plate, resulting in the resin being unable to completely fill the entire pores of the expanded graphite. The optimal temperature for impregnating the epoxy resin/diluent system by vacuum impregnation is 50 ℃, and the optimal addition ratio of diluent ethylene glycol diglycidyl ether is 15%(mass fraction). The obtained bipolar plate has excellent electrical conductivity of 340.12 S/cm, flexural strength of 41.52 MPa, and helium permeability of 5.4×10-7 cm3·cm-2·s-1.http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2023.000276fuel cellbipolar platevacuum impregnationexpanded graphite |
| spellingShingle | ZHAN Zize ZHENG Junsheng FAN Runlin YAO Dongmei CHEN Jing MING Pingwen Preparation process of graphite-based composite bipolar plate by vacuum impregnation Cailiao gongcheng fuel cell bipolar plate vacuum impregnation expanded graphite |
| title | Preparation process of graphite-based composite bipolar plate by vacuum impregnation |
| title_full | Preparation process of graphite-based composite bipolar plate by vacuum impregnation |
| title_fullStr | Preparation process of graphite-based composite bipolar plate by vacuum impregnation |
| title_full_unstemmed | Preparation process of graphite-based composite bipolar plate by vacuum impregnation |
| title_short | Preparation process of graphite-based composite bipolar plate by vacuum impregnation |
| title_sort | preparation process of graphite based composite bipolar plate by vacuum impregnation |
| topic | fuel cell bipolar plate vacuum impregnation expanded graphite |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2023.000276 |
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