质子交换膜快速离子通道构建研究

我们设计了一种具有氰基的聚烯烃嵌段型非氟质子交换膜离聚物。该离聚物由磺化苯乙烯和丙烯腈两种嵌段组成，其中磺酸官能团提供质子传输位点，而氰基和氰基之间的相互作用诱导聚合物链段自组装从而形成规整的微观结构。由于规整离子通道的构建，所制备的嵌段型质子交换膜具有较高的质子电导率，其在30和80度时的质子电导率分别达到了176和273 mS/cm。此外，该质子交换膜还具有较好的机械性能，其拉伸强度和断裂伸长率分别达到了26 MPa和27%。将制备的质子交换膜应用于燃料电池测试，表现出最高0.8 W/cm2的功率密度峰值。We have designed a cyano-containing polyolefin-based block non-fluorinated proton exchange membrane ionomer. The ionomer is composed of two distinct blocks: sulfonated styrene and acrylonitrile. The sulfonic acid functional groups provide proton transport sites, while the interactions between cyano groups induce the self-assembly of polymer segments to form well-ordered microstructures. Owing to the construction of ordered ion channels, the as-prepared block proton exchange membrane exhibits high proton conductivity, with values of 176 and 273 mS/cm at 30 °C and 80 °C, respectively. Furthermore, this proton exchange membrane possesses favorable mechanical properties, with a tensile strength of 26 MPa and an elongation at break of 27%. When subjected to fuel cell testing, the as-prepared proton exchange membrane delivers a peak power density of up to 0.8 W/cm².

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背景概述

该数据集聚焦于质子交换膜快速离子通道的构建研究，设计了一种含氰基的聚烯烃嵌段型非氟质子交换膜离聚物，通过自组装形成规整微观结构以提升质子电导率和机械性能，并应用于燃料电池测试，实现了较高的功率密度峰值。