Imidazolium‐Functionalized Fluorene‐Based Anion Exchange Membrane (AEM) for Fuel Cell Applications,ChemistrySelect

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Imidazolium‐Functionalized Fluorene‐Based Anion Exchange Membrane (AEM) for Fuel Cell Applications
ChemistrySelect ( IF 1.9 ) Pub Date : 2020-01-24 , DOI: 10.1002/slct.201903246
Umme Salma _{1,

2} , Dishen Zhang ₁ , Yuki Nagao ₁

Affiliation

After a fluorene‐based anion exchange membrane (AEM) containing 1‐isopropyl‐2‐methylimidazolium with alkyl side chains was prepared, the membrane properties, including OH^– conductivities, ion exchange capacity (IEC), water uptake, swelling ratio, and chemical and thermal stabilities of the obtained membrane were assessed. The synthesized membrane exhibited low water uptake and good dimensional stability with adequate hydroxide conductivity. For example, the AEM showed a swelling ratio of 7% and hydroxide conductivity of 46 mS cm⁻¹ at 80 °C in liquid water. The chemical stability was investigated in 1 M NaOH solution at room temperature and at 80 °C. At both temperatures, degradation of the imidazolium cationic groups was observed, although the main chain was chemically stable. All results obtained from this research are expected to provide important direction and insight for AEM synthesis for practical applications in anion exchange membrane fuel cells.

中文翻译：

咪唑功能化的基于氟的阴离子交换膜（AEM），用于燃料电池应用

制备了含有1-异丙基-2-甲基咪唑并带有烷基侧链的芴基阴离子交换膜（AEM）后，膜的特性包括OH ^–电导率，离子交换容量（IEC），吸水率，溶胀率和化学性质评估所得膜的热稳定性。合成的膜表现出低的吸水率和良好的尺寸稳定性以及足够的氢氧化物电导率。例如，AEM的溶胀率为7％，氢氧化物电导率为46 mS cm ^-1在80°C的液态水中。在室温和80°C的1 M NaOH溶液中研究化学稳定性。在两个温度下，虽然主链在化学上是稳定的，但观察到咪唑鎓阳离子基团的降解。从这项研究中获得的所有结果有望为阴离子交换膜燃料电池实际应用中的AEM合成提供重要的方向和见识。

更新日期：2020-01-24

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