With the intention of improving the comprehensive performance of anion exchange membranes (AEMs), a series of hamburger-structure AEMs based on triple-ammonium side chain poly(2,6-dimethyl-1,4-phenylene oxide) (TA-PPO) membrane were prepared. 1, 2-dimetylimidazolium-modified silica (Im-SiO₂) was introducing to the surface of the TA-PPO membrane to fabricate a hamburger structure of Im-SiO₂/TA-PPO membrane. The hamburger structure of the Im-SiO₂/TA-PPO membrane is clearly observed by scanning electron microscope (SEM) and energy dispersive X-ray (EDX) linear scanning. Surprisingly, the Im-SiO₂ layer on the surface of TA-PPO shows many valuable properties. Such as impressive ion conduction ability, water retaining capacity, and swelling resistance. Besides, the Im-SiO₂ layer serves as a preserver to protect the TA-PPO membrane from being attacked by hydroxide and oxygen radical. Compared with TA-PPO membrane, the Im-SiO₂/TA-PPO composite membrane exhibits the higher hydroxide conductivity and dimensional stability, and even higher alkaline stability and oxidation resistance. Typically, the Im-SiO₂/TA-PPO composite membrane exhibits a maximum hydroxide conductivity of 105 mS/cm at 80 °C with a swelling ratio of 8.2%. Therefore, the hamburger structure of the Im-SiO₂/TA-PPO membranes provides a new and reliable method to improve the comprehensive performance of AEM.

为了改善阴离子交换膜（AEM）的综合性能，一系列基于三铵侧链聚（2,6-二甲基-1,4-苯撑氧）（TA-PPO）的汉堡结构AEM膜已准备好。参照图1，将2-二咪唑咪唑改性的二氧化硅（Im-SiO ₂）引入TA-PPO膜的表面以制造Im-SiO ₂ / TA-PPO膜的汉堡结构。通过扫描电子显微镜（SEM）和能量色散X射线（EDX）线性扫描可以清楚地观察到Im-SiO ₂ / TA-PPO膜的汉堡结构。出人意料的是，Im-SiO ₂TA-PPO表面的有机层显示出许多有价值的特性。如令人印象深刻的离子传导能力，保水能力和抗溶胀性。此外，Im-SiO ₂层用作保护剂，以保护TA-PPO膜不受氢氧化物和氧自由基的攻击。与TA-PPO膜相比，Im-SiO ₂ / TA-PPO复合膜具有更高的氢氧化物电导率和尺寸稳定性，甚至具有更高的碱稳定性和抗氧化性。通常，Im-SiO ₂ / TA-PPO复合膜在80°C下的最大氢氧化物电导率为105 mS / cm，溶胀率为8.2％。因此，Im-SiO ₂的汉堡结构/ TA-PPO膜为提高AEM的综合性能提供了一种新的可靠方法。