Effects of reactants/coolant non-uniform inflow on the cold start performance of PEMFC stack
文献类型：期刊论文
| 作者 | Wei, Lin2; Dafalla, Ahmed Mohmed1,2; Jiang, Fangming2
|
| 刊名 | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
 |
| 出版日期 | 2020-05-05 |
| 卷号 | 45期号:24页码:13469-13482 |
| ISSN号 | 0360-3199 |
| 关键词 | Proton exchange membrane fuel cell Cold start Coolant Numerical model |
| DOI | 10.1016/j.ijhydene.2020.03.031 |
| 通讯作者 | Jiang, Fangming(fm_jiang2000@yahoo.com) |
| 英文摘要 | The failure at equally distributing reactants among different channels within the stack leads to uneven reaction and gas concentration distribution in the catalyst layers, which consequently impacts the performance and durability of proton exchange membrane fuel cell stacks (PEMFCs). A three-dimensional, transient, non-isothermal cold start model for PEMFCs with parallel flow-field configuration and coolant circulation is developed in this work to investigate the effects of non-uniform distribution of reactants/coolant inflow rates on the cold start process. The results show that the effect of non-uniform inflow on ice formation amount is obvious and that on the distribution uniformity of current density is apparent over the cold start survival time. Additionally, the simulation predictions show that the non-uniform initial membrane water content distribution due to the purge procedure can significantly increase the rate of ice growth and deteriorate the uniformity of current density distribution in the membrane. It is found that high stoichiometry operating condition is favorable to cold startup, but may result in drying in the membrane at regions close to the channel inlet side. As non-uniform inflow rates issue is inevitable in actual PEMFC stack operation conditions, our results demonstrate that the initial membrane water content and cathode stoichiometry ratio need to be identified to moderate the effects of reactants/coolant inflow maldistribution and to maintain a stable cold start performance for the PEMFC stack. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. |
| WOS关键词 | MEMBRANE FUEL-CELL ; FLOW-FIELDS ; PROTON TRANSPORT ; SELF-START ; PARALLEL ; BEHAVIOR ; DESIGN ; CONDUCTIVITY ; PARAMETERS ; CHANNEL |
| 资助项目 | China National Key RD Project[2018YFB0905303] ; Shanghai Automotive Industry Sci-Tech Development Foundation[1706] ; Guangdong Science and Technology Department[2017B010120003] ; Guangdong Science and Technology Department[2016A030313172] ; Guangdong Science and Technology Department[2015A030308019] |
| WOS研究方向 | Chemistry ; Electrochemistry ; Energy & Fuels |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000528271900029 |
| 资助机构 | China National Key RD Project ; Shanghai Automotive Industry Sci-Tech Development Foundation ; Guangdong Science and Technology Department |
| 源URL | [http://ir.giec.ac.cn/handle/344007/26827]  |
| 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.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Lab Adv Energy Syst, CAS Key Lab Renewable Energy,Guangdong Key Lab Ne, Guangzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wei, Lin,Dafalla, Ahmed Mohmed,Jiang, Fangming. Effects of reactants/coolant non-uniform inflow on the cold start performance of PEMFC stack[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2020,45(24):13469-13482. |
| APA | Wei, Lin,Dafalla, Ahmed Mohmed,&Jiang, Fangming.(2020).Effects of reactants/coolant non-uniform inflow on the cold start performance of PEMFC stack.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,45(24),13469-13482. |
| MLA | Wei, Lin,et al."Effects of reactants/coolant non-uniform inflow on the cold start performance of PEMFC stack".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 45.24(2020):13469-13482. |
入库方式： OAI收割
来源：广州能源研究所
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