| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Effect of Electrochemical Corrosion on Oxygen Transport Resistance in Gas Diffusion Layer |
| HONG Kang1,2, ZHU Kai1,2, LIU Shengchu1,2, LI Shang1,2,3,*, PAN Mu1,2,3
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1 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology, Wuhan 430070, China
2 Key Laboratory of Hubei Province for Fuel Cells, Wuhan University of Technology, Wuhan 430070, China
3 Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Foshan 528200, Guangdong, China |
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Abstract 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.
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Published:
Online: 2022-10-26
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| Fund:National Natural Science Foundation of China (22075218) and the Opening Fund of Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory(XHD2020-002-03). |
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2022, Vol. 36 
