模拟PEM燃料电池环境下质子交换膜损伤研究  

STUDY ON DEGRADATION OF PROTON EXCHANGE MEMBRANE IN SIMULATED PEM FUEL CELL ENVIRONMENTS

作　　者：杨卫战 谈金祝[1] 刘嘉然 夏威 王燕康 Yang Weizhan;Tan Jinzhu;Liu Jiaran;Xia Wei;Wang Yankang(College of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211816,China)

机构地区：[1]南京工业大学机械与动力工程学院,南京211816

出　　处：《太阳能学报》2022年第9期493-498,共6页Acta Energiae Solaris Sinica

摘　　要：该文研究在模拟燃料电池环境下的质子交换膜(PEM)材料的损伤情况。选用2种溶液模拟质子交换膜燃料电池(PEMFC)环境,一种是接近燃料电池实际运行环境溶液,称为正规溶液(RS),另一种则为加速试样老化的加速持久性(ADT)溶液。采用衰减全反射傅里叶变换红外光谱(ATR-FTIR)和X射线光电子能谱(XPS)技术对老化试样表面的化学成分变化进行研究;同时,采用机械拉伸性能试验对老化前后试样进行研究。试验结果表明,在模拟PEMFC环境下,随着老化时间的增加,试样表面分子结构和化学成分发生明显变化,抗拉强度和断裂伸长率降低,试样材料损伤加剧。In this work,in order to investigate the material degradation of PEM,the PEM was exposed to the simulated PEMFC environments. In order to simulate PEMFC environments,two solutions were selected. One of the solutions was called as the regular solution(RS),close to the real PEM fuel cell environment,and another solution was an accelerated durability test(ADT)solution for the accelerated aging tests. Attenuated total reflection Fourier transform infrared spectroscopy(ATR-FTIR)and X-ray photoelectron spectroscopy(XPS)were used to study the surface chemistry change of aging samples. The mechanical properties tests were conducted for the samples before and after aging. The experimental results show that with the increase of aging time,the molecular structure and chemical composition of the sample surface change significantly,the tensile strength and elongation at break decreased,and the degradation of the sample material increased.

关 键 词：质子交换膜燃料电池 质子交换膜 老化 损伤 

分 类 号：TM911.42[电气工程—电力电子与电力传动]