含有POSS的复合型质子交换膜的制备及性能

摘要

A naphthylene-containing sulfonated polyaryletherketone (SPAEK) was synthesized as a matrix. A polyazomethine having naphthylene, ether and ketone linkages ( PAM) was selected as a molecular-enhanced component. Aimed at improving the properties, a ternary-composite membrane was constructed by incorporating sulfonic acid-functionalized polysilsesquioxane through a sol-gel processing. The morphology of the membranes was studied by SEM. Compared with plain SPAEK and SPAEK/PAM blend, the ternary-composite membranes show higher proton conductivity and selectivity.%燃料电池作为一种高效环保的绿色能源,有望获得重要应用[1～3].作为聚合物电解质膜燃料电池和直接甲醇燃料电池的核心部件,质子交换膜的研制是该领域的热点,针对目前具有产业化规模的Nafion膜所表现的使用温度低及阻醇性差等缺点,开发能够替代Nafion的下一代高性能质子交换膜备受关注[4],人们通常采用将磺酸基引入到热稳定性较好的芳族聚合物(例如聚芳醚、聚芳醚酮和聚酰亚胺等)中,制备具有较高有质子传导功能有膜材料.