膜
化学
离子交换
乙醚
咪唑
高分子化学
热稳定性
聚合物
酮
电导率
芳烯
侧链
芳基
材料科学
核化学
离子
有机化学
烷基
物理化学
生物化学
作者
Kai Yang,Jingmei Xu,Tianen Shui,Zhenguo Zhang,Hui Wang,Qian Liu,Wenbo Chen,Hongcheng Shen,Hongyu Zhang,Zhe Wang,Hongzhe Ni
标识
DOI:10.1016/j.reactfunctpolym.2020.104551
摘要
A series of poly (aryl ether ketone) polymers (PAEKS) and uncross-linked and cross-linked anion exchange membranes (AEMs) with different contents of 1-allyl-3-methylimidazolium chloride and 1-vinylimidazole were prepared. 1HNMR demonstrated the successful preparation of PAEKS. FT-IR provided proof of successfully prepared AEMs. TEM image and SAXS profile showed that these membranes had good microphase separation structure which provides a good channel for ion transport. At 80 °C, the ion conductivity of C-S-Im-PAEKS-3 membrane reached 0.1357 S/cm. Compared with the cross-linked membrane, the uncross-linked membrane showed higher water uptake and swelling ratio. The cross-linked membranes showed vastly improved mechanical properties and alkaline stability, compared to uncross-linked membrane. Tensile strength of C-S-Im-PAEKS-3 membrane reached 31.3 MPa. After soaking the series of membranes in 2 M NaOH solution at 80 °C over 400 h, the ion conductivity of C-S-Im-PAEKS-3 membrane still reached 0.0936 S/cm at 80 °C. In addition, the cross-linked membranes also showed good thermal stability, which promoted the development of anion exchange membrane fuel cells (AEMFCs).
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