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Analysis and Characterization of Mechanical Durability of Perfluorosulfonic Acid Proton Exchange Membrane
LI Yongzhe, WANG Jingjing, DING Han, WANG Kai, SHI Xiang, WANG Li, ZOU Yecheng, LIU Xundao
Acta Metrologica Sinica ›› 2025, Vol. 46 ›› Issue (6) : 795-801.
PDF(1615 KB)
PDF(1615 KB)
Analysis and Characterization of Mechanical Durability of Perfluorosulfonic Acid Proton Exchange Membrane
The mechanical durability of perfluorosulfonic acid proton exchange membrane (PFSA-PEM) plays an important role in the performance, life and service reliability of proton exchange membrane fuel cell (PEMFC). The mechanical durability of homogeneous and enhanced PFSA-PEM was carried out by dry-wet cycle method, and the attenuation mechanism and influencing factors were analyze. The mechanism of enhanced material on mechanical properties, dimensional change rate and durability of PFSA-PEM was verified. The results show that the method can effectively characterize the tensile strength and elastic modulus of PFSA-PEM and give the spatial location information of the local failure point from the thermal imaging, thus, provide a strong basis for further optimizing the manufacturing process parameters and improving the mechanical durability of PFSA-PEM.
fuel cell / proton exchange membrane / perfluorosulfonic acid / mechanical durability / dry-wet cycle method
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