Facile Preparation of an Ether-Free Anion Exchange Membrane with Pendant Cyclic Quaternary Ammonium Groups
Facile Preparation of an Ether-Free Anion Exchange Membrane with Pendant Cyclic Quaternary Ammonium Groups
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轻松制备带有环状季铵基团的无醚阴离子交换膜
DOI：
10.1021/acsaem.9b00674
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发表时间：
2019
影响因子：
6.4
通讯作者：
Qinggang He
中科院分区：
文献类型：
--
作者：
Rong Ren;Shuomeng Zhang;Hamish Andrew Miller;Francesco Vizza;John Robert Varcoe;Qinggang He
通过一锅法、超强酸催化缩聚和随后的季胺化反应，制备了含有以哌啶阳离子封端的柔性烷基侧链的无醚键聚荧烯阴离子交换膜(AEMS)。在所有的AEMS中都观察到了亲水和疏水的微相分离。在80℃下，PbF2-BR的氢氧化物电导率高达86ms cm-1，在80℃的NaOH(1M)水溶液中碱处理1H核磁共振显示没有明显的降解，此外，以所选择的PBF1-OH(OH型)为AEM的碱性燃料电池在60℃时获得了410 mW cm-2的峰值功率密度。
Ether-bond-free polyfluorene (PBF) anion exchange membranes (AEMs) containing flexible alkyl pendent chains terminated with piperidinium cations were prepared via one-pot, superacid-catalyzed polycondensation and a subsequent quaternization reaction. Hydrophilic and hydrophobic microphase segregation was observed in all AEMs. The hydroxide conductivity of PBF2-Br reaches up to 86 mS cm–1 at 80 °C, and 1H NMR showed no measurable degradation after alkaline treatment in aqueous NaOH (1 M) solution for 1200 h at 80 °C. Besides, a peak power density of 410 mW cm–2 was achieved at 60 °C for an alkaline fuel cell using the selected PBF1-OH (OH– form) as AEM.