Effect of catalyst layer mesoscopic pore-morphology on cold start process of PEM fuel cells
文献类型：期刊论文
| 作者 | Dafalla, Ahmed Mohmed1,2; Jiang, Fangming1
|
| 刊名 | FRONTIERS IN ENERGY
 |
| 出版日期 | 2021-04-10 |
| 页码 | 13 |
| 关键词 | cold start energy conversion fuel cells mesoscale morphology tortuosity water management |
| ISSN号 | 2095-1701 |
| DOI | 10.1007/s11708-021-0733-4 |
| 通讯作者 | Jiang, Fangming(fm_jiang2000@yahoo.com) |
| 英文摘要 | Water transport is of paramount importance to the cold start of proton exchange membrane fuel cells (PEMFCs). Analysis of water transport in cathode catalyst layer (CCL) during cold start reveals the distinct characteristics from the normal temperature operation. This work studies the effect of CCL mesoscopic poremorphology on PEMFC cold start. The CCL mesoscale morphology is characterized by two tortuosity factors of the ionomer network and pore structure, respectively. The simulation results demonstrate that the mesoscale morphology of CCL has a significant influence on the performance of PEMFC cold start. It was found that cold-starting of a cell with a CCL of less tortuous mesoscale morphology can succeed, whereas starting up a cell with a CCL of more tortuous mesoscale morphology may fail. The CCL of less tortuous pore structure reduces the water back diffusion resistance from the CCL to proton exchange membrane (PEM), thus enhancing the water storage in PEM, while reducing the tortuosity in ionomer network of CCL is found to enhance the water transport in and the water removal from CCL. For the sake of better cold start performance, novel preparation methods, which can create catalyst layers of larger size primary pores and less tortuous pore structure and ionomer network, are desirable. |
| 资助项目 | National Key Research and Development Project[2018YFB0905303] ; Shanghai Automotive Industry Sci-Tech Development Foundation[1706] |
| WOS研究方向 | Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:000637478100001 |
| 出版者 | HIGHER EDUCATION PRESS |
| 资助机构 | National Key Research and Development Project ; Shanghai Automotive Industry Sci-Tech Development Foundation |
| 源URL | [http://ir.giec.ac.cn/handle/344007/32962]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Jiang, Fangming |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Lab Adv Energy Syst,Guangdong Key Lab New & Renew, Guangzhou 510640, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dafalla, Ahmed Mohmed,Jiang, Fangming. Effect of catalyst layer mesoscopic pore-morphology on cold start process of PEM fuel cells[J]. FRONTIERS IN ENERGY,2021:13. |
| APA | Dafalla, Ahmed Mohmed,&Jiang, Fangming.(2021).Effect of catalyst layer mesoscopic pore-morphology on cold start process of PEM fuel cells.FRONTIERS IN ENERGY,13. |
| MLA | Dafalla, Ahmed Mohmed,et al."Effect of catalyst layer mesoscopic pore-morphology on cold start process of PEM fuel cells".FRONTIERS IN ENERGY (2021):13. |
入库方式： OAI收割
来源：广州能源研究所
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