Measurement Technique of Effective Oxygen Diffusion-Coefficient of Water-Containing Gas Diffusion Layers

被引：1

作者：

Hori, R. ^{[1
]}

Kato, I. ^{[1
]}

Ida, A. ^{[2
]}

Yamamoto, A. ^{[2
]}

Sano, Y. ^{[3
]}

机构：

[1] SOKEN Inc, 500-20 Minamiyama,Komenoki Cho, Nisshin, Aichi 4700111, Japan

[2] Toyota Motor Co Ltd, Toyota Cho, Toyota, Aichi 4718571, Japan

[3] DENSO TECHNO Co Ltd, 1-9-11 Mikawaanjyominami Machi, Anjo, Aichi 4460058, Japan

来源：

POLYMER ELECTROLYTE FUEL CELLS 17 (PEFC 17) | 2017年 / 80卷 / 08期

关键词：

CATALYSTS;

D O I：

10.1149/08008.0113ecst

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

An effective oxygen diffusion-coefficient in gas diffusion layer (GDL) is critical for improving the performance of polymer electrolyte fuel cell (PEFC). Effective oxygen diffusion-coefficient of GDL decreases with increasing water saturation, and it leads to a drop in performance. Therefore, we developed a measuring technique for effective oxygen diffusion- coefficient of water-containing GDL. Saturation was measured through a sample weight change in the drying process. Using this technique we elucidated the relationship between effective oxygen diffusion-coefficient and water saturation in GDL. As a result, it was verified that the amount of decrease in effective oxygen diffusion-coefficient with water saturation is based on GDL hydrophobicity.

引用

页码：113 / 121

页数：9

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