Anion exchange membranes (AEMs) as the key component of alkaline anion exchange membrane fuel cells (AEMFCs) are closely related to their performance. Reducing membrane thickness as much as possible on the premise of ensuring electrical conductivity and mechanical strength is of great significance in improving the performance of AEMFCs. As the membrane thickness decreases, the mass transfer resistance can be significantly reduced, while the energy conversion efficiency can be improved. Here we fabricated a freestanding AEM with excellent mechanical strength and ionic conductivity with a thickness of 10 μm, which can fulfill the fuel cell requirements. The fuel cell assembled from the fabricated freestanding ultrathin AEM presents an excellent power output of 1.8 W cm⁻² and a long-term stable operation of ∼140 h.

中文翻译：

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用于高性能 AEMFC 的具有改进的 OH- 转移率的超薄阴离子交换膜

阴离子交换膜（AEMs）作为碱性阴离子交换膜燃料电池（AEMFCs）的关键部件，与其性能密切相关。在保证导电性和机械强度的前提下尽可能减小膜的厚度对提高AEMFCs的性能具有重要意义。随着膜厚度的减小，传质阻力可以显着降低，同时能量转换效率可以提高。在这里，我们制造了一个具有出色机械强度和离子电导率的独立式 AEM，厚度为 10 μm，可以满足燃料电池的要求。由制造的独立式超薄 AEM 组装而成的燃料电池具有 1.8 W cm ^{-2的出色功率输出}并长期稳定运行~140 h。