Attaining a high performance proton exchange membrane as a suitable replacement for Nafion is one of the research priorities of fuel cell research. In this regard, we synthesized a copolyimide consisting of sulfonic acid substituents filled with different content of GO grafted sulfonated poly (urea-co-urethane) via in situ condensation polymerization. All nanocomposites showed a significant increase in thermal, mechanical properties, ion exchange capacity (IEC), water uptake (WU) and proton conductivity by incorporation of the modified GO nanosheets and the best results were found for membrane containing 1 wt% modified GO loading. The nanocomposite membrane with 1 wt% modified GO nanosheets exhibits 0.73 meq g⁻¹ IEC and 7.3 mS cm⁻¹ proton conductivity at room temperature. A single fuel cell test of this membrane demonstrates a maximum power density of 26.30 mW cm⁻² at 0.26 V.

获得高性能的质子交换膜作为Nafion的合适替代品是燃料电池研究的研究重点之一。在这方面，我们通过原位缩聚合成了由磺酸取代基组成的共聚酰亚胺，该磺酸取代基填充了不同含量的GO接枝的磺化聚（脲共聚尿烷）。通过掺入改性的GO纳米片，所有纳米复合材料的热，机械性能，离子交换容量（IEC），吸水率（WU）和质子传导率均显着提高，对于含有1 wt％的改性GO负载的膜，发现了最佳结果。具有1 wt％的改性GO纳米片的纳米复合膜表现出0.73 meq g ^-1 IEC和7.3 mS cm ^-1室温下质子电导率。该膜的单燃料电池测试表明，在0.26 V下的最大功率密度为26.30 mW cm ^-2。