Achieving high ionic conductivity and alkaline stability of anion exchange membranes (AEMs) is critical for anion exchange membrane fuel cells (AEMFCs). Here we described a method of preparing perfluorinated comb-shaped cationic polymers containing long-range ordered (LROed) –CF₂CF₂-(CF₂CF₂)n–CF₂–CF₂- main chain with pendant (-CF₂CF₂SONH-) side chain terminated by long comb-hydrophilic-cationic groups for AEMs application. Super-hydrophobic backbone promoted the formation of defined nano-phase separated channels and the resulted comb-shaped AEMs demonstrated ion conductivity of 88.6 mS cm⁻¹ at 80 °C and kept low water uptake (17.1 wt%) and excellent dimensional stability (7.0%). Chemically robust polymer skeleton reduced hydroxide ion attack at fixed cation group and 91.8% of initial values was retained after Hoffman elimination in 8 M KOH over 16 days at 80 °C. Furthermore, a membrane electrode assembly (MEA) based on perfluorinated-comb AEMs showed a peak power density of 306.1 mW cm⁻² at 80 °C in a H₂/O₂ (CO₂-free) fuel cells.

实现阴离子交换膜（AEM）的高离子电导率和碱性稳定性对于阴离子交换膜燃料电池（AEMFC）至关重要。在这里，我们描述了一种制备全氟梳状阳离子聚合物的方法，该聚合物包含长程有序（LROed）-CF ₂ CF _2-（CF ₂ CF ₂）n-CF ₂ -CF _2-带有侧链的主链（-CF ₂ CF _2个SONH-）侧链由长的梳状亲水性阳离子基团封端用于AEM。超疏水主链促进了确定的纳米相分离通道的形成，所得的梳状AEM表现出88.6 mS cm ^-1的离子电导率在80°C下保持较低的吸水率（17.1 wt％）和出色的尺寸稳定性（7.0％）。化学强度高的聚合物骨架可减少固定阳离子基团上的氢氧根离子侵蚀，在80°C下于16天内在8 M KOH中的Hoffman消除后保留了初始值的91.8％。此外，基于全氟化梳状AEM的膜电极组件（MEA）在80℃下在H ₂ / O ₂（无CO ₂）燃料电池中显示出306.1mW cm ^-2的峰值功率密度。