Proton exchange membranes from crosslinked poly(vinyl alcohol) using sulfosuccinic acid (SSA) and glutaraldehyde as double crosslinking agents were reported. The effect of SSA content on water uptake and proton conductivity was investigated. The most promising membrane was then formed into composites with zeolitic imidazolate framework-8 (ZIF-8). ZIF-8 was synthesized, and confirmed by Fourier transform infrared spectroscopy, X-ray diffraction analysis, and transmission electron microscopy. The effect of ZIF-8 loading (0–10%) on membrane properties was firstly reported. Relatively good dispersion of ZIF-8 nanoparticles was observed for composites with %loadings up to 5%. The enhancements in proton conductivity and mechanical strength were observed upon ZIF-8 addition, and the optimum loading was 5%. In an attempt to improve proton conductivity at low relative humidity, the composite was further doped with imidazole. Proton conductivity increased with increasing imidazole content and temperature, and reached a maximum of 2.3 × 10⁻⁴ S/cm at 80 °C under non-humidified condition.

报道了使用磺基琥珀酸 (SSA) 和戊二醛作为双交联剂的交联聚乙烯醇质子交换膜。研究了 SSA 含量对吸水率和质子电导率的影响。然后将最有前途的膜与沸石咪唑酯骨架-8 (ZIF-8) 形成复合材料。合成了 ZIF-8，并通过傅里叶变换红外光谱、X 射线衍射分析和透射电子显微镜证实。首次报道了 ZIF-8 负载（0-10%）对膜性能的影响。对于负载百分比高达 5% 的复合材料，观察到 ZIF-8 纳米颗粒的相对良好的分散。添加 ZIF-8 后，质子传导率和机械强度均有所提高，最佳负载量为 5%。为了改善低相对湿度下的质子传导性，复合材料进一步掺杂了咪唑。质子电导率随着咪唑含量和温度的增加而增加，最高可达 2.3 × 10^-4  S/cm 在 80 °C 下非加湿条件。