Numerical investigation of design and operating parameter effects on permeability-differentiated alkaline fuel cell with metal foam flow field

被引:9
作者
Cheng, Chaochao [1 ]
Wang, Bowen [1 ]
Liu, Zhi [1 ]
Zhang, Guobin [1 ]
Xie, Biao [1 ]
Tongsh, Chasen [1 ]
Xi, Fuqiang [1 ,2 ]
Chen, Wenmiao [2 ,3 ]
Jiao, Kui [1 ]
机构
[1] Tianjin Univ, State Key Lab Engines, 135 Yaguan Rd, Tianjin 300350, Peoples R China
[2] Weichai Power Co Ltd, 197A Fushou St E, Weifang 261016, Peoples R China
[3] Shandong Natl Ctr Technol Innovat Fuel Cell Co Lt, 169 Weian Rd, Weifang, Shandong, Peoples R China
基金
中国国家自然科学基金;
关键词
Alkaline anion exchange membrane fuel cell; Metal foam; Hydraulic permeation; Permeability-differentiated layout; Pressure drop; WATER MANAGEMENT; PERFORMANCE; SIMULATION; TRANSPORT; GRADIENT;
D O I
10.1016/j.applthermaleng.2022.118183
中图分类号
O414.1 [热力学];
学科分类号
摘要
Metal foam (MF) material is recognized as an attractive flow field for the alkaline anion exchange membrane fuel cell (AAEMFC). In this paper, the effect of design parameters (MF thickness and permeability) and operating parameters (operating temperature and back pressure) are investigated and optimized through the numerical study. The maximum temperature of the AAEMFC with MF flow field is lower and temperature distribution is more uniform compared to that of AAEMFC with serpentine flow field. In general, the higher operating temperature decreases the cell performance slightly in the low current density region but enhances the cell performance obviously in the medium and high current density regions. The higher back pressure promotes the cell performance in the low current density region but decreases the cell performance in the high current density region. The anode MF thickness has the significant effect on the cell performance, and the thinner anode MF thickness benefits the cell performance. However, the effect of cathode MF thickness is relatively negligible. The lower permeability of the anode MF and higher permeability of cathode MF lead to the better performance. The permeability-differentiated layout of MFs in anode and cathode sides is proposed for the first time, and it is proven to improve the cell performance effectively due to the enhanced hydraulic permeation and membrane hydration. Electrochemical kinetics, thermal and water transport characteristics (including pressure drop, liquid water transport, membrane water distribution and ohmic loss) are analyzed in detail to explain the cell performance improvement.
引用
收藏
页数:15
相关论文
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