In the present work, a semi-interpenetrating network (semi-IPN) high-temperature proton exchange membrane based on polyethyleneimine (PEI), epoxy resin (ER), and polybenzimidazole (PBI) was prepared and characterized, aiming at their future application in fuel cell devices. The physical properties of the semi-IPN membrane are characterized by thermogravimetric analysis (TGA) and tensile strength test. The results indicate that the as-prepared PEI-ER/PBI semi-IPN membranes possess excellent thermal stability and mechanical strength. After phosphoric acid (PA) doping treatment, the semi-IPN membranes show high proton conductivities. PA doping level and volume swelling ratio as well as proton conductivities of the semi-IPN membranes are found to be positively related to the PEI content. High proton conductivities of are achieved at 160°C for these PA-doped PEI-ER/PBI series membranes. H₂/O₂ fuel cell assembled with PA-doped PEI-ER(1 : 2)/PBI membrane delivered a peak power density of 170 mW cm^-2 at 160°C under anhydrous conditions.

中文翻译：

---

聚乙烯亚胺-环氧树脂和聚苯并咪唑用于HT-PEM燃料电池的半互穿网络膜

在本工作中，针对聚乙烯亚胺（PEI），环氧树脂（ER）和聚苯并咪唑（PBI）的半互穿网络（semi-IPN）高温质子交换膜进行了制备和表征，以期在将来的应用。燃料电池装置。通过热重分析（TGA）和拉伸强度测试来表征半IPN膜的物理性能。结果表明，所制备的PEI-ER / PBI半IPN膜具有优异的热稳定性和机械强度。经过磷酸（PA）掺杂处理后，半IPN膜显示出高质子电导率。发现半IPN膜的PA掺杂水平和体积溶胀率以及质子电导率与PEI含量呈正相关。高质子电导率这些掺PA的PEI-ER / PBI系列膜在160°C时可达到最佳温度。组装有掺PA的PEI-ER（1：2）/ PBI膜的H ₂ / O ₂燃料电池在无水条件下于160°C时可提供170 mW cm ^-2的峰值功率密度。