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首页> 外文期刊>Polymers >Proton Conductive Channel Optimization in Methanol Resistive Hybrid Hyperbranched Polyamide Proton Exchange Membrane
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Proton Conductive Channel Optimization in Methanol Resistive Hybrid Hyperbranched Polyamide Proton Exchange Membrane

机译：耐甲醇杂化超支化聚酰胺质子交换膜的质子传导通道优化

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摘要

Based on a previously developed polyamide proton conductive macromolecule, the nano-scale structure of the self-assembled proton conductive channels (PCCs) is adjusted via enlarging the nano-scale pore size within the macromolecules. Hyperbranched polyamide macromolecules with different size are synthesized from different monomers to tune the nano-scale pore size within the macromolecules, and a series of hybrid membranes are prepared from these two micromoles to optimize the PCC structure in the proton exchange membrane. The optimized membrane exhibits methanol permeability low to 2.2 ???? 10 ?￠????7 cm 2 /s, while the proton conductivity of the hybrid membrane can reach 0.25 S/cm at 80 ???°C, which was much higher than the value of the Nafion 117 membrane (0.192 S/cm). By considering the mechanical, dimensional, and the thermal properties, the hybrid hyperbranched polyamide proton exchange membrane (PEM) exhibits promising application potential in direct methanol fuel cells (DMFC).
机译：基于先前开发的聚酰胺质子传导大分子，通过扩大大分子中的纳米级孔径来调整自组装质子传导通道（PCC）的纳米级结构。由不同的单体合成具有不同尺寸的超支化聚酰胺大分子，以调节大分子内的纳米级孔径，并由这两个微分子制备一系列杂化膜以优化质子交换膜中的PCC结构。优化的膜表现出低至2.2的甲醇渗透率。 10Ω·λ·7 cm 2 / s，而杂化膜的质子传导率在80℃时可达到0.25 S / cm，远高于Nafion 117膜的值（0.192 S /厘米）。考虑到机械，尺寸和热性能，混合超支化聚酰胺质子交换膜（PEM）在直接甲醇燃料电池（DMFC）中显示出广阔的应用前景。

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