|
|||||
|
|
Cold-start icing characteristics of proton-exchange membrane fuel cells |
|
| Affiliation: | 1. School of Mechanical Engineering, Tianjin University, Tianjin 300350, China;2. Key Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University), Ministry of Education, Tianjin 300350, China;1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Hubei, 430070, China;2. School of Power and Energy Engineering, Wuhan University of Technology, Hubei 430070, China;3. School of Automotive Engineering, Wuhan University of Technology, Hubei, 430070, China;4. Institute for Integrated Energy Systems and Department of Mechanical Engineering, University of Victoria, Victoria, BC, V8W 2Y2, Canada;1. Key Laboratory of Ministry of Education in the Field of Road and Transport Engineering, Tongji University, Shanghai 201804, China;2. Clean Energy Automotive Engineering Center, 4800 Caoan Road, Tongji University, Shanghai 201804, China;3. School of Automotive Studies, 4800 Caoan Road, Tongji University, Shanghai 201804, China;1. State Key Laboratory of Engines, Tianjin University, 135 Yaguan Road, Tianjin, 300350, China;2. Zhengzhou Yutong Bus Co., Ltd, Yutong Industry Park, Zhengzhou, 450016, China;1. State Key Laboratory of Engines, Tianjin University, 135 Yaguan Road, Tianjin, 300350, China;2. Sunrise Power Co., Ltd., 907 Huangpu Rd., Hi-Tech Zone, Dalian, 116085, China;1. State Key Laboratory of Engines, Tianjin University, 92 Weijin Road, Tianjin 300072, China;2. Internal Combustion Research Institute, Tianjin University, 92 Weijin Road, Tianjin 300072, China;3. Department of Mechanical Engineering, University of Michigan, 2350 Hayward St., Ann Arbor, MI 48109, USA |
| Abstract: | Understanding the icing characteristics of proton-exchange membrane fuel cells (PEMFCs) is essential for optimizing their cold-start performance. This study examined the effects of start-up temperature, current density, and microporous layer (MPL) hydrophobicity on the cold-start performance and icing characteristics of PEMFCs. Further, the cold-start icing characteristics of PEMFCs were studied by testing the PEMFC output voltage, impedance, and temperature changes at different positions of the cathode gas diffusion layer. Observation of the MPL surface after cold-start failure allowed determination of the distribution of ice formation at the catalytic layer/MPL interface. At fuel cell temperatures below 0 °C, supercooled water in the cell was more likely to undergo concentrated instantaneous freezing at higher temperatures (−4 and −5 °C), whereas the cathode tended to freeze in sequence at lower temperatures (−8 °C). In addition, a more hydrophobic MPL resulted in two successive instantaneous icing phenomena in the fuel cell and improved the cold-start performance. |
| Keywords: | Proton exchange membrane fuel cell Cold start Impedance test Icing characteristics Hydrophobicity PEMFC"} {"#name":"keyword" "$":{"id":"kwrd0040"} "$$":[{"#name":"text" "_":"proton-exchange membrane fuel cell CL"} {"#name":"keyword" "$":{"id":"kwrd0050"} "$$":[{"#name":"text" "_":"catalytic layer MEA"} {"#name":"keyword" "$":{"id":"kwrd0060"} "$$":[{"#name":"text" "_":"membrane electrode assembly GDL"} {"#name":"keyword" "$":{"id":"kwrd0070"} "$$":[{"#name":"text" "_":"gas diffusion layer MPL"} {"#name":"keyword" "$":{"id":"kwrd0080"} "$$":[{"#name":"text" "_":"microporous layer PEM"} {"#name":"keyword" "$":{"id":"kwrd0090"} "$$":[{"#name":"text" "_":"proton-exchange membrane |
| 本文献已被 ScienceDirect 等数据库收录！ | |