一种制备具有半互穿网络结构的高温质子交换膜材料的方法

我们从线性OPBI、具有萘环结构的可交联聚芳醚酮和氨基封端的小分子PBI（PBI-4NH2）作为交联剂制备了具有半互穿网络结构的聚合物膜，以提供在燃料电池中具有增强稳定性的高温质子交换膜。研究并评估了所制备的semi-IPN膜的关键性能，包括热稳定性和氧化稳定性、机械性能、磷酸掺杂率和单位体积PA掺杂水平、质子传导率和单电池性能，并与商业化的OPBI所制备的膜进行比较。

We prepared semi-interpenetrating network (semi-IPN) polymer membranes using linear OPBI and naphthalene ring-containing crosslinkable polyaryletherketone as the base polymers, with amino-terminated small-molecule PBI (PBI-4NH2) as the crosslinker, aiming to fabricate high-temperature proton exchange membranes with enhanced stability for fuel cell applications. Key properties of the as-prepared semi-IPN membranes were investigated and evaluated, including thermal stability, oxidative stability, mechanical properties, phosphoric acid doping level, PA doping level per unit volume, proton conductivity, and single cell performance, with comparisons made against membranes prepared from commercial OPBI.