论文标题
建模使用具有图案性润湿性的气体扩散层在质子交换膜燃料电池中进行高级水管理的效果
Modelling the Effects of using Gas Diffusion Layers with Patterned Wettability for Advanced Water Management in Proton Exchange Membrane Fuel Cells
论文作者
论文摘要
我们提出了质子交换膜燃料电池（PEMFC）的宏观均匀两相模型。该模型考虑了气体扩散层（GDL）的机械压缩，水的两相流，气体的传输以及反应剂气体的电化学反应。该模型用于模拟具有图案化GDL的PEMFC的行为。仅考虑机械压缩和两相流的简化模型的结果与中子放射线照相成像获得的实验前静脉吸收数据进行了比较。结果很好。此外，通过使用所有模型功能，已经对操作燃料电池进行了模拟，以研究操作燃料电池中的复杂耦合并检查图案化的GDL效应。该模型证实，图案化的GDL设计从液态水中释放了预定义的域，因此局部增加了氧扩散率。
We present a macrohomogeneous two-phase model of a proton exchange membrane fuel cell (PEMFC). The model takes into account the mechanical compression of the gas diffusion layer (GDL), the two-phase flow of water, the transport of the gas species and the electrochemical reaction of the reactant gases. The model was used to simulate the behavior of a PEMFC with a patterned GDL. The results of the reduced model, which considers only the mechanical compression and the two-phase flow, are compared to the experimental ex-situ imbibition data obtained by neutron radiography imaging. The results are in good agreement. Additionally, by using all model features, a simulation of an operating fuel cell has been performed to study the intricate couplings in an operating fuel cell and to examine the patterned GDL effects. The model confirms that the patterned GDL design liberates the pre-defined domains from liquid water and thus locally increases the oxygen diffusivity.
