| 动态工况条件下PEMFC电堆内的水热行为 |
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| 引用本文： | 唐田,杨代军,郑小亮,马建新,王海江.动态工况条件下PEMFC电堆内的水热行为[J].电源技术,2010,34(2). |
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| 作者姓名： | 唐田 杨代军 郑小亮 马建新 王海江 |
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| 作者单位： | 1. 同济大学汽车学院,上海,201804
2. 加拿大国家研究院,燃料电池创新技术研究所,温哥华,BC,V6T,1W5 |
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| 基金项目： | 国际科技合作项目(2007DFC61690);;国家外专局及教育部“111”计划;;同济大学汉高基金教席的资金支持 |
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| 摘 要： | PEMFC的水热行为直接影响它的性能与寿命。用现场温度测量与流体力学计算(CFD)相结合的方法,研究了kW级PEMFC电堆内部在动态工况条件下的水热行为,发现MEA表面的温度和质子交换膜内水含量分布呈现区域差异性,且随动态工况周期或电流密度的变化而变化。这种水热行为容易造成MEA局部区域水热疲劳损伤,引起裂纹生成,导致催化层结构受到破坏及质子交换膜性能衰减。控制电堆内的水热行为,减少它对MEA的损害,将是提高PEMFC电堆耐久性的有效途径。
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| 关 键 词： | PEMFC电堆 动态工况 水热行为 |
Hydrothermal behavior of PEMFC stack under dynamic drive profiles |
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| TANG Tian,YANG Dai-jun,ZHENG Xiao-liang,MA Jian-xin,WANG Hai-jiang.Hydrothermal behavior of PEMFC stack under dynamic drive profiles[J].Chinese Journal of Power Sources,2010,34(2). |
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| Authors: | TANG Tian YANG Dai-jun ZHENG Xiao-liang MA Jian-xin WANG Hai-jiang |
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| Affiliation: | 1. College of Automotive Engineering;Tongji University;Shanghai 201804;China;2. IFCI;National Research Council of Canada;Vancouver BC V6T 1W5;Canada |
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| Abstract: | Hydrothermal behavior of PEMFC directly affects its performance and lifetime. The hydrothermal behaviors of a kW-class PEMFC stack under dynamic drive profiles was studied through in-situ temperature measurement and computational fluid dynamics (CFD) simulation. It is found that the distributions of temperature and membrane water content inside the stack are different from region to region and vary with the current density and the dynamic load cycle period. Such hydrothermal behavior will cause regional PEM... |
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| Keywords: | PEMFC stack dynamic drive profile hydrothermal behavior |
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