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引用次数: 0
摘要
燃料电池的性能在很大程度上受流道设计的影响，这也是影响其整体性能的最重要因素之一。在这项工作中，使用开源工具箱在 0.5、0.4 和 0.3 V 电压下对蛇形、平行和交错几何形状进行了数值模拟，以观察质子交换膜燃料电池三维多相非等温模型阴极侧的液态水饱和度分布。结果表明，蛇形流道的电流密度最大，饱和度分布最小。此外，最大饱和值位于膜电极组件的边缘。离子分布发生了重要变化，直接影响到电流密度。
Numerical analysis on the liquid saturation at the cathode side of a PEM fuel cell with different flow paths
The performance of fuel cells is greatly influenced by the design of the flow channels, making it one of the most significant factors impacting their overall performance. In this work, numerical simulations on serpentine, parallel, and interdigitated geometries are carried out using an open-source toolbox at 0.5, 0.4, and 0.3 V to observe the liquid water saturation distribution at the cathode side of a three-dimensional multiphase non-isothermal model of a protonic exchange membrane fuel cell. The results indicate that the serpentine flow channel shows the maximum current density and the minimum saturation distribution. Also, it is shown that maximum saturation values are located at the edges of the membrane-electrode assembly. There is an important change in the ionic distribution which directly impacts the current density.
期刊介绍：
Ionics is publishing original results in the fields of science and technology of ionic motion. This includes theoretical, experimental and practical work on electrolytes, electrode, ionic/electronic interfaces, ionic transport aspects of corrosion, galvanic cells, e.g. for thermodynamic and kinetic studies, batteries, fuel cells, sensors and electrochromics. Fast solid ionic conductors are presently providing new opportunities in view of several advantages, in addition to conventional liquid electrolytes.
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