The alkaline fuel cell is subject to extensive research owing to its fast kinetic response relative to acidic media. However, the efficiency of the catalytic layer at the electrodes depends on the amount and distribution of ionomers present there. It is crucial to have the right ionomer concentration to have the best cell performance. Additionally, the membrane thickness is a significant parameter that affects the system performance in alkaline fuel cells. This research studies the best alkaline fuel cell performance using the membrane electrode assembly preparation parameters. The prepared membrane electrode assembly consists of catalyst layers containing Fumion, a commercial anion exchange ionomer, as a binding agent, sandwiched a Fumasep, a well-known commercial anion exchange membrane. This work elucidates the single-cell alkaline fuel cell performance by quantifying the influence of Fumion concentrations (~20–60 wt.%) within the catalytic layer and Fumasep thicknesses (30, 75 and 130 μm). The best concentration of Fumion was found to be 50 wt.%, culminating in the maximum peak power density of 67 mW cm⁻² achieved by the FAA-3-PK-75. Meanwhile, FAA-3-PK-130 exhibited the highest open-circuit potential with lowest power density at 53 mW cm⁻². These findings may serve as a valuable guide for membrane electrode assembly preparation in alkaline fuel cells.

中文翻译：

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碱性燃料电池中离聚物浓度和膜厚度对膜电极组件性能的影响

碱性燃料电池由于其相对于酸性介质的快速动力学响应而受到广泛的研究。然而，电极处催化层的效率取决于那里存在的离聚物的数量和分布。拥有正确的离聚物浓度对于获得最佳电池性能至关重要。此外，膜厚度是影响碱性燃料电池系统性能的重要参数。本研究使用膜电极组件制备参数研究最佳碱性燃料电池性能。制备的膜电极组件由含有Fumion（一种商业阴离子交换离聚物）作为粘合剂的催化剂层和夹有Fumasep（一种著名的商业阴离子交换膜）组成。这项工作通过量化催化层内 Fumion 浓度（~20-60 wt.%）和 Fumasep 厚度（30、75 和 130 μm）的影响，阐明了单电池碱性燃料电池的性能。发现 Fumion 的最佳浓度为 50 wt.%，最终FAA-3-PK-75 实现了67 mW cm ^-2的最大峰值功率密度。同时，FAA-3-PK-130表现出最高的开路电势和最低的功率密度，为53 mW cm ^-2。这些发现可以为碱性燃料电池中膜电极组件的制备提供有价值的指导。