Influence of cathode channel blockages on the cold start performance of proton exchange membrane fuel cell: A numerical study
文献类型：期刊论文
| 作者 | Dafalla, Ahmed Mohmed1,2,3; Wei, Lin1,2,3; Liao, Zihao1,2,3,4; Guo, Jian1,2,3; Jiang, Fangming1,2,3 |
| 刊名 | ENERGY
 |
| 出版日期 | 2023-01-15 |
| 卷号 | 263页码:14 |
| 关键词 | Computational fuel cell dynamics Proton exchange membrane fuel cell Cold start Cathode channel blockage |
| ISSN号 | 0360-5442 |
| DOI | 10.1016/j.energy.2022.125687 |
| 通讯作者 | Jiang, Fangming(jiangfm@ms.giec.ac.cn) |
| 英文摘要 | Proton exchange membrane fuel cell (PEMFC) performance is mainly limited by the oxygen transport to the cathode catalyst layer. Using gas flow channel blockages can effectively enhance oxygen transport. Previous research efforts demonstrated the beneficial effect of blockages on the performance of PEMFC. However, to date, the impact of flow channel blockages on the cold start performance of PEMFC has not been studied. In this work, a three-dimensional, transient, non-isothermal cold start model is developed to investigate the influence of adding staggered blocks in the cathode gas channels of a parallel flow field. The model is validated by previous experimental data. It is revealed by simulations that the addition of blockages helps to mitigate the oxygen transport limitation over the cold start duration, thus a better cold start performance is achieved. The simulated results show that the cathode full-blockage placement enhances the cold start performance much better than the partial blockage one. The local current density distribution in the full-blockage configuration case has greatly advanced, especially under the land region, due to the induced strong forced convection. More importantly, the existence of full blockages drives more oxygen into the CL for the reaction; therefore, more water correspondingly is generated, resulting in more amount of ice formation in the cathode CL, which is not favorable to the cold start process. However, despite the relatively higher ice fraction of the full-blockage case, the enhanced oxygen transport plays more dominant role at the late stages of the cold process by improving the uniformity of ice distribution in the flow direction and significantly boosting the local current density under the land region. The present article provides helpful insight in the possible utilization of the cathode channel blockage approach for assisting the design optimization of cold start process of PEMFCs. |
| WOS关键词 | PARALLEL FLOWFIELD CHANNELS ; STAGGERED BLOCKAGES ; HEAT-TRANSFER ; ICE FORMATION ; FLOW CHANNEL ; SELF-START ; IN-LINE ; ENHANCEMENT ; TEMPERATURES ; DEGRADATION |
| 资助项目 | CAS-VPST Silk Road Science Fund[182344KYSB20210007] ; National Natural Science Foundation of China[52006226] ; Key Laboratory Foundation of Chinese Academy of Sciences[E029030301] ; CAS PIFI Visiting Scientist Fellowship[2020VEA0022] |
| WOS研究方向 | Thermodynamics ; Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:000878775400001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | CAS-VPST Silk Road Science Fund ; National Natural Science Foundation of China ; Key Laboratory Foundation of Chinese Academy of Sciences ; CAS PIFI Visiting Scientist Fellowship |
| 源URL | [http://ir.giec.ac.cn/handle/344007/37853]  |
| 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.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 3.CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dafalla, Ahmed Mohmed,Wei, Lin,Liao, Zihao,et al. Influence of cathode channel blockages on the cold start performance of proton exchange membrane fuel cell: A numerical study[J]. ENERGY,2023,263:14. |
| APA | Dafalla, Ahmed Mohmed,Wei, Lin,Liao, Zihao,Guo, Jian,&Jiang, Fangming.(2023).Influence of cathode channel blockages on the cold start performance of proton exchange membrane fuel cell: A numerical study.ENERGY,263,14. |
| MLA | Dafalla, Ahmed Mohmed,et al."Influence of cathode channel blockages on the cold start performance of proton exchange membrane fuel cell: A numerical study".ENERGY 263(2023):14. |
入库方式： OAI收割
来源：广州能源研究所
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