金属有机骨架锚定磺化聚（醚砜）作为燃料电池的高温质子交换膜,Journal of Membrane Science

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金属有机骨架锚定磺化聚（醚砜）作为燃料电池的高温质子交换膜
Journal of Membrane Science ( IF 8.4 ) Pub Date : 2018-11-01 , DOI: 10.1016/j.memsci.2018.08.037
Nosaibe Anahidzade , Amir Abdolmaleki , Mohammad Dinari , Koorosh Firouz Tadavani , Mohammad Zhiani

摘要通过将 Cr-MIL-101-NH2 通过 Hinsberg 反应锚定在芳族聚合物骨架上，合成了一种在高温无水条件下具有高质子传导性的质子传导磺化聚（醚砜）-金属-有机骨架膜。金属有机骨架作为悬垂的多孔胺化部分对膜特征的影响，如吸水率、溶胀率、机械、氧化和热稳定性、形态、酸保持能力、离子交换能力、长期耐久性、氢交叉、质子有条不紊地研究了电导率和燃料电池性能。金属-有机骨架结构中空穴和-NH2 基团的存在增强了磺化聚（醚砜）-金属-有机骨架膜的酸保留能力。这种行为导致膜在高温和低湿度下具有令人满意的性能（膜的质子传导率在 160°C 下增加到 0.041 S cm-1（与 Nafion = 0.003 S cm-1 相比））。此外，由金属有机骨架产生的交联过程提高了聚合物的尺寸稳定性（溶胀率从 57% 降低到 4%）、抗氧化性、拉伸强度、吸水率和氢渗透。

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Metal-organic framework anchored sulfonated poly(ether sulfone) as a high temperature proton exchange membrane for fuel cells

Abstract A proton-conducting sulfonated poly(ether sulfone)-metal-organic framework membrane with high proton conductivity at high temperature and anhydrous conditions was synthesized by anchoring the Cr-MIL-101-NH2 to the aromatic polymer backbone via a Hinsberg reaction. The effect of metal-organic frameworks as the pendant porous aminated moieties on membrane features such as water uptake, swelling ratio, mechanical, oxidative and thermal stabilities, morphology, acid retention capacity, ion exchange capacity, long-term durability, hydrogen crossover, proton conductivity and fuel cell performance was methodically studied. The presence of holes and -NH2 groups in the metal-organic frameworks structure enhanced the acid retention capacity of the sulfonated poly(ether sulfone)-metal-organic framework membrane. This behavior resulted in the satisfactory performance of the membrane at high temperatures and low humidity (the proton conductivity of the membrane was increased to 0.041 S cm−1 (as compared to Nafion = 0.003 S cm−1) at 160 °C). Moreover, the crosslinking process which produced by metal-organic frameworks increased the dimensional stability (the swelling ratio was reduced from 57% to 4%), oxidative resistance, tensile strength, water uptake, and hydrogen crossover of the polymer.

更新日期：2018-11-01

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