首页> 外文会议>ASME international mechanical engineering congress and exposition >A 5-CM~2 PEM FUEL CELL GAS DIFFUSION LAYER EXPERIMENTAL STUDY AND SCANNING ELECTRON MICROSCOPY VISUALIZATION
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A 5-CM~2 PEM FUEL CELL GAS DIFFUSION LAYER EXPERIMENTAL STUDY AND SCANNING ELECTRON MICROSCOPY VISUALIZATION

机译:5-CM〜2 PEM燃料电池气体扩散层的实验研究和扫描电镜的可视化

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The present experimental study aims to determine the effect of two different gas diffusion layers in the performance of a 5-cm~2 proton exchange membrane (PEM) fuel cell. The gas diffusion layers consisted of a carbon cloth gas diffusion (GDL-CT) and a non-woven carbon paper (Sigracet 25 BC, Sigracet 29, and BC Sigracet 35 BC). The effect of the GDL parameters on the fuel cell performance was evaluated by the polarization curve. Based on the polarization curve results, it was confirmed that the carbon cloth gas diffusion layer had a better performance than the non-woven carbon. Different temperatures, hydrogen flow rates and inlet pressures were tested. Images from the scanning electron microscopy were obtained to visualize the internal structure of a carbon paper GDL and a carbon cloth GDL; it was observed different surface structures between them.
机译:本实验研究旨在确定两种不同的气体扩散层对5 cm〜2质子交换膜(PEM)燃料电池性能的影响。气体扩散层由碳布气体扩散(GDL-CT)和非织造碳纸(Sigracet 25 BC,Sigracet 29和BC Sigracet 35 BC)组成。通过极化曲线评估了GDL参数对燃料电池性能的影响。根据极化曲线结果,证实了碳布气体扩散层具有比非织造碳更好的性能。测试了不同的温度,氢气流速和入口压力。从扫描电子显微镜得到的图像使碳纸GDL和碳布GDL的内部结构可视化。观察到它们之间具有不同的表面结构。

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