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首页> 外文期刊>International Journal of Electrochemical Science >Effect of Relative Humidity and Temperature on the Mechanical Properties of PFSA NafionTM-cation-exchanged membranes for Electrochemical Applications
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Effect of Relative Humidity and Temperature on the Mechanical Properties of PFSA NafionTM-cation-exchanged membranes for Electrochemical Applications

机译：相对湿度和温度对PFSA电化学用Nafion阳离子交换膜力学性能的影响

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摘要

Perfluorosulfonic acid (PFSA) polymer membranes, also known as PEM (proton-exchange membranes), such as Nafion? are widely used as electrolyte thin films in electrochemical hydrogen energy systems such as fuel cells, electrolysers and electrochemical hydrogen compressors. In the present work the effect of temperature and relative humidity on the elastic moduli of various PEMs were investigated through uniaxial and biaxial tensile testing. Results of the two techniques were analysed and compared to one another to determine the validity of bulge testing in the investigation of the mechanical properties of PEMs. The bulge test technique was applied to assess the effect of elevated temperatures, humidity levels and cation contamination on the rupture pressure of the membranes. The effects of cation exchange and water absorption on the mechanical strength of PEMs are discussed in terms of cation water interactions within the molecular structure of PFSA polymers.
机译：全氟磺酸（PFSA）聚合物膜，也称为PEM（质子交换膜），例如Nafion？被广泛用作电化学氢能系统中的电解质薄膜，例如燃料电池，电解槽和电化学氢压缩机。在本工作中，通过单轴和双轴拉伸试验研究了温度和相对湿度对各种PEM弹性模量的影响。对这两种技术的结果进行了分析并相互比较，以确定凸出测试在研究PEM的机械性能方面的有效性。凸出测试技术用于评估高温，湿度和阳离子污染对膜破裂压力的影响。根据PFSA聚合物分子结构中阳离子水的相互作用，讨论了阳离子交换和吸水对PEMs机械强度的影响。

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