Abstract In this study, the preparation and characterization of a new ternary nanocomposite polymer electrolyte membrane containing sulfonated PSU, MOF and silica nanoparticles were investigated as a polymer electrolyte membrane. The encapsulation of imidazole in NH2MIL-53(Al) and sulfonic acid functionalization of silica have been developed to produce proton-conducting nanoparticles. In addition, photografting polymerization of AMPS from PSU and sulfonation of PSU backbone was designed to prepare PSU chains bearing sulfonic acid groups. The embedding of MOF/Si nanoparticles resulted in significant improvement of the mechanical and thermal properties of the prepared membranes. According to the result of proton conductivity, proton transport of the prepared nanocomposite membrane increases to 17 mS cm−1 by adding only 5% of sulfonic acid functionalized silica and imidazole-encapsulated MOF nanoparticles (at 70 °C). Also, this nanocomposite membrane showed a power density as high as 40.80 mW cm−2 at peak current density of 100.30 mA cm−2. The thermal and mechanical properties of these nanocomposite membranes were also studied.

中文翻译：

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一种由金属有机骨架和二氧化硅纳米粒子组成的新型聚砜基三元纳米复合膜：用作聚合物电解质燃料电池的质子交换膜

摘要 在这项研究中，研究了一种含有磺化 PSU、MOF 和二氧化硅纳米粒子的新型三元纳米复合聚合物电解质膜作为聚合物电解质膜的制备和表征。咪唑在 NH2MIL-53(Al) 中的封装和二氧化硅的磺酸官能化已被开发用于生产质子传导纳米颗粒。此外，设计了来自 PSU 的 AMPS 的光接枝聚合和 PSU 骨架的磺化，以制备带有磺酸基团的 PSU 链。MOF/Si 纳米颗粒的嵌入显着改善了所制备膜的机械和热性能。根据质子传导率的结果，通过仅添加 5% 的磺酸官能化二氧化硅和咪唑包封的 MOF 纳米粒子（70°C），制备的纳米复合膜的质子传输增加到 17 mS cm-1。此外，该纳米复合膜在 100.30 mA cm-2 的峰值电流密度下显示出高达 40.80 mW cm-2 的功率密度。还研究了这些纳米复合膜的热性能和机械性能。