质子交换膜燃料电池
多物理
阳极
阴极
入口
材料科学
水流
膜
分析化学(期刊)
流量(数学)
体积流量
机械
化学
环境科学
环境工程
色谱法
热力学
电极
有限元法
物理
地质学
地貌学
生物化学
物理化学
作者
Shizhong Chen,Zhongxian Xia,Shiyu Xing,Xu Zhang,Yuhou Wu
出处
期刊:International Journal of Simulation and Process Modelling
[Inderscience Enterprises Ltd.]
日期:2015-01-01
卷期号:10 (4): 372-372
被引量:1
标识
DOI:10.1504/ijspm.2015.072538
摘要
Water content in proton exchange membranes (PEM) has an important effect on PEM fuel cells. The water concentration gradient map was simulated by using COMSOL multiphysics, and this figure was calculated and analysed to get the water concentration distribution in PEM. The results show that water concentration in the membrane shows inverse parabolic increase along the direction of gas flow. The trend of water concentration on the cathode surface is the same as on the anode surface, both of them increase along the direction of gas flow, but the value on the cathode side is higher than that on the anode side. The change rate of water concentration on the membrane increases along the direction of gas flow. The water concentration on the middle position of the membrane is the lowest throughout the membrane, even lower than inlet along the thickness direction, which can lead to water shortages.
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