Effect of Electrochemical Corrosion on Oxygen Transport Resistance in Gas Diffusion Layer

被引：0
作者：
Hong K. [1 ,2 ]
Zhu K. [1 ,2 ]
Liu S. [1 ,2 ]
Li S. [1 ,2 ,3 ]
Pan M. [1 ,2 ,3 ]
机构：
[1] State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan
[2] Key Laboratory of Hubei Province for Fuel Cells, Wuhan University of Technology, Wuhan
[3] Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Guangdong, Foshan
来源：
Cailiao Daobao/Materials Reports | 2022年 / 36卷 / 20期
基金：
中国国家自然科学基金;
关键词：
electrochemical corrosion; gas diffusion layer; oxygen transport resistance; proton exchange membrane fuel cell;
D O I：
10.11896/cldb.21030161
中图分类号：
学科分类号：
摘要：
The off-line accelerated stress tests were used to conduct the electrochemical corrosion of gas diffusion layer for different hours, and the effect of the electrochemical corrosion time on the oxygen transport resistance of gas diffusion layer was evaluated by limiting current methods. The results show that the dry region of gas diffusion layer is narrower, and the oxygen transport resistance increases significantly after electrochemical corrosion. When the relative pressure is 150 kPa and the oxygen mole fraction is 21%, the oxygen transport resistance values of gas diffusion layer after 48 h and 72 h electrochemical corrosion increase by approximately 61. 82 s/ m and 95. 62 s/ m, respectively. The morphology of the gas diffusion layer was studied by scanning electron microscopy (SEM). The reason why the water management ability of gas diffusion layer decreases after electrochemical corrosion was analyzed by SEM image and contact angles. © 2022 Cailiao Daobaoshe/ Materials Review. All rights reserved.
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