中文摘要：

煤气的散开层(GDL ) 在质子交换膜燃料房间(PEMFC ) 起一个大重要作用。在 GDL 的水运输机制仍然不是清楚的。在现在的学习， ex-situ 透明安装被造设想运输现象并且在不同温度在 GDL 测量水的阀值压力。在突破压力和温度之间的关系是将近线性的，这被发现(即压力随温度的增加线性地减少) 。为了避免这些问题，由连续统模型，面对了毛孔网络模型被开发通过复写纸模仿液体水运输。一个一致压力边界条件在模拟被使用，结果类似于在实验获得的。原因是接触角度和在 GDL 的水的表面紧张系数随着温度的变化因此变化。

英文摘要：

Gas diffusion layer （GDL） plays a great important role in proton exchange membrane fuel cell （PEMFC）. Water transport mechanism in GDL is still not clear. In the present study, an ex-situ transparent setup is built to visualize the transport phenomena and to measure the threshold pressure of water in GDL at different temperatures. It is found that the relationship between the breakthrough pressure and the temperature is nearly linear （i.e. the pres- sure decreases linearly with the increase of temperature）. To avoid the problems faced by the continuum models, the pore network model is developed to simulate the liquid water transport through the carbon paper. A uniform pressure boundary condition is used in simulation and the results are similar to the ones obtained in the experiment. The reason is that the contact angle and surface tension coefficient of water in GDLs change accordingly with the change of temperature.