In this study, pentablock terpolymers with methylpyrrolidinium cations were characterized and investigated as anion exchange membranes and ionomers for solid‐state alkaline fuel cells. The pentablock terpolymer (with methylpyrrolidinium cations) membranes exhibited higher fuel cell power density and durability than commercial FuMA‐Tech (with quaternary ammonium cations) membranes at 30 °C, 100% relative humidity (RH). Optimization of the catalyst ink composition (i.e., solids and solvent ratio) and fuel cell performance of membrane electrode assemblies (MEAs) with pentablock terpolymers as both the membrane and ionomer were also investigated. Optimization of the fuel cell operating conditions corroborates with the in situ electrochemical impedance spectroscopy results. The pentablock terpolymer MEA exhibited a maximum power density of 83.3 mW cm⁻² and voltage decay rate of 0.7 mV h⁻¹ after 100 h of operation under 40 °C, 100% RH. These results show promise for pentablock terptolymers with methylpyrrolidinium cations as a commercially attractive low‐cost alternative anion exchange membrane and ionomer for solid‐state alkaline fuel cells.

中文翻译：

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具有甲基吡咯烷鎓阳离子作为阴离子交换膜和离聚物的五嵌段三元共聚物的固态碱性燃料电池性能

在这项研究中，对具有甲基吡咯烷鎓阳离子的五嵌段三元共聚物进行了表征，并作为固态碱性燃料电池的阴离子交换膜和离聚物进行了研究。在30°C，100％相对湿度（RH）的情况下，五嵌段三元共聚物（带有甲基吡咯烷鎓阳离子）膜比商用FuMA-Tech（带有季铵阳离子）膜具有更高的燃料电池功率密度和耐久性。还研究了以五嵌段三元共聚物作为膜和离聚物的膜电极组件（MEA）的催化剂油墨成分（即固体和溶剂比例）和燃料电池性能的优化。燃料电池运行条件的优化与原位相符电化学阻抗谱的结果。五嵌段三元共聚物MEA在40℃，100％RH下操作100小时后，表现出最大功率密度为83.3mW cm ^-2，电压衰减率为0.7mVh ^-1。这些结果表明，具有甲基吡咯烷鎓阳离子的五嵌段三聚体有望成为一种具有商业吸引力的低成本替代性阴离子交换膜和固态固态燃料电池的离聚物。