In this study, it is demonstrated that operation of dead-ended anode fuel cell at high temperature and pressure reduce the durability of membrane electrode assembly. In such a way that after 9000 degradation cycles, the maximum power density under H₂/O₂ gas feed mode for the aged MEA at high temperature and pressure is dropped by 38.8%. While the maximum power density drop is 27.1% for the aged MEA at low temperature and pressure. Comparison of the electrochemical impedance spectroscopy responses of MEAs shows that during aging process, the charge transfer resistance increase rate is more at higher temperature and pressure. This suggests the more severe destruction of catalyst layer at higher temperature and pressure and is in agreement with the obtained values of electrochemical surface area from the cyclic voltammetry test. In addition, the transmission electron microscopy and scanning electron microscopy images show the further degradation of cathode catalyst layer and more sever Pt agglomeration at higher temperature and pressure.

在这项研究中，证明了无端阳极燃料电池在高温和高压下运行会降低膜电极组件的耐用性。这样，经过9000次降解循环后，H ₂ / O ₂下的最大功率密度在高温和高压下，老化的MEA的供气模式下降了38.8％。而在低温和低压下，老化的MEA的最大功率密度下降为27.1％。MEA的电化学阻抗谱响应的比较表明，在老化过程中，较高温度和压力下电荷转移电阻的增加速率更大。这表明在较高的温度和压力下催化剂层的破坏更严重，并且与从循环伏安法测试获得的电化学表面积的值一致。另外，透射电子显微镜和扫描电子显微镜图像显示出在较高的温度和压力下阴极催化剂层的进一步降解和更严重的Pt附聚。