Image Measurement of Water Droplets in Cathode of PEFC Based on Background Subtraction Method
Image Measurement of Water Droplets in Cathode of PEFC Based on Background Subtraction Method
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基于背景扣除法的PEFC阴极水滴图像测量
DOI：
10.1149/1.3635576
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
and S. Hirai
中科院分区：
文献类型：
--
作者：
K. Nishida;S. Tanaka;S. Tsushima;and S. Hirai
为了减轻聚合物电解质燃料电池（PEFC）的水淹没，有必要研究液态水在运行的燃料电池阴极电极中传输的基本现象。提出了一种基于背景扣除法的PEFC阴极气体扩散层（GDL）上水滴动态行为定量成像新技术。此外，在阴极中的电流密度的测量进行使用分段电池结构的概念，并在膜电极组件（MEA）的水平衡进行了研究。注意到阴极GDL表面上的液态水分布在逆流燃料电池的中游区域具有最大值。
To alleviate water flooding in polymer electrolyte fuel cells (PEFCs), it is essential to investigate the fundamental phenomena of liquid water transport in cathode electrode of operating fuel cell. This paper presented a novel imaging technique for quantitatively evaluating the dynamic behavior of water droplets on the cathode gas diffusion layer (GDL) of a PEFC based on background subtraction method. Furthermore, the current density measurement in the cathode was performed using segment cell structure concept, and the water balance in the membrane electrode assembly (MEA) was investigated. It was noted that the liquid water distribution on the cathode GDL surface has the maximum value in the midstream region of the counter-flow fuel cell.