Gyroid-Nanostructured All-Solid Polymer Films Combining High H+ Conductivity with Low H2 Permeability
Gyroid-Nanostructured All-Solid Polymer Films Combining High H+ Conductivity with Low H2 Permeability
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DOI：
10.1002/marc.202100115
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发表时间：
2021-05-07
影响因子：
4.6
通讯作者：
Ichikawa, Takahiro
中科院分区：
文献类型：
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作者：
Kobayashi, Tsubasa;Li, Ya-xin;Ichikawa, Takahiro
通过两性离子两亲性单体和可聚合酰亚胺型酸的混合物的交联聚合，共组织成双连续立方液晶相，已经创建了具有极高的质子传导性和低的H-2气体渗透性的螺旋纳米结构的全固态聚合物膜。通过从同步加速器X射线衍射图案重建3D电子图来可视化螺旋状纳米结构。这些膜表现出10（-1）S cm（-1）量级的高质子传导率和10（-15）mol m（-2）s（-1）Pa-1量级的极低的H-2气体渗透率。这些性能可以归因于离子液体样层的存在下，沿沿着螺旋最小表面。由于这两个特性是提高质子交换膜燃料电池性能所必需的，因此本膜设计代表了用于开发与建立可持续能源有关的先进设备的有前途的策略。
Gyroid-nanostructured all-solid polymer films with exceedingly high proton conductivity and low H-2 gas permeability have been created via crosslinking polymerization of mixtures of a zwitterionic amphiphilic monomer and a polymerizable imide-type acid that co-organize into bicontinuous cubic liquid-crystalline phases. The gyroid nanostructures are visualized by reconstructing a 3D electron map from the synchrotron X-ray diffraction patterns. These films exhibit high proton conductivity of the order of 10(-1) S cm(-1) and extremely low H-2 gas permeability of the order of 10(-15) mol m m(-2) s(-1) Pa-1. These properties can be ascribed to the presence of the ionic liquid-like layer along the gyroid minimal surface. Since these two characteristics are required for improving the performance of proton-exchange membrane fuel cells, the present membrane design represents a promising strategy for the development of advanced devices, pertinent to establishing sustainable energy sources.