酸性环境对PEM燃料电池弹性体垫片材料老化性能的影响
李果;谈金祝;巩建鸣
【期刊名称】《南京工业大学学报（自然科学版）》 【年(卷),期】2012(034)001
【摘要】The durability and the stability of the elastomeric gaskets had a significant effect on the electrochemical performance of the proton exchange membrane ( PEM) fuel cell. Based on the acidic environment of PEM fuel cell,four test solutions were prepared. The aging of the elastomeric gaskets material exposed to the four solutions was studied for PEM fuel cell. The optical microscopy and attenuated total reflection Fourier transform infrared ( ATR-FTIR) spectroscopy were used to study the topographical changes on the samples surface and the surface chemistry of the elastomeric gasket material before and after exposure to the acidic environments over time. The results showed that the aging time and the aging medium had a significant effect on the degree of the damage of the samples, and surface conditions were changed over time from initially smooth to rough, cracked surface and finally crack propagation. The higher the concentration of test solutions, the severer the material degraded. The degradation mechanisms of the material could be de-crosslinking and chain scissoring in the backbone in test environments.%质子交换膜(PEM)燃料电池中弹性体垫片材料的持久性和稳定性对整个燃料电池的电化学性能有着重要影响.根据弹性体垫片材料在PEM燃
酸性环境对PEM燃料电池弹性体垫片材料老化性能的影响
