As the need for fuel cell systems increases, much research is underway to replace platinum catalysts. Therefore, non-precious metal catalysts composed of inexpensive metal have attracted attention. Along with catalyst development, the importance of electrode development is emphasized. In this study, two manufacturing methods using a commercial non-Pt catalyst (FeNC) for cathode were adopted to investigate the effect of the method on the performance of membrane electrode assembly (MEA) for polymer electrolyte membrane fuel cell (PEMFC). Additionally, the effect of different ionomer ratios in the catalyst slurry compositions on the electrode was studied. As a result, the MEA with cathode fabricated by the spray method displayed 2.87-times higher performance than that of MEA with cathode by gas diffusion electrode that is manufactured using the Doctor-blade method. The higher performance of the spray electrode is attributed to the large portions of the pores under 10 nm in the electrode estimated by the mercury intrusion porosimetry. Therefore, it is important to generate large numbers of mesopores to fabricate a high-performance electrode of the non-precious metal catalyst for PEMFC.

中文翻译：

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聚合物电解质膜燃料电池非贵金属催化剂阴极制备方法研究

随着对燃料电池系统需求的增加，正在进行大量研究以替代铂催化剂。因此，由廉价金属组成的非贵金属催化剂引起了人们的关注。随着催化剂的开发，电极开发的重要性得到强调。在这项研究中，采用两种使用商用非 Pt 催化剂（FeNC）作为阴极的制造方法来研究该方法对聚合物电解质膜燃料电池（PEMFC）膜电极组件（MEA）性能的影响。此外，还研究了催化剂浆料组合物中不同离聚物比例对电极的影响。结果，通过喷涂方法制造的带有阴极的 MEA 显示出 2。通过使用刮刀法制造的气体扩散电极，性能比带阴极的 MEA 高 87 倍。喷雾电极的较高性能归因于通过压汞孔隙率测定法估计的电极中 10 nm 以下的大部分孔隙。因此，重要的是产生大量的介孔来制造用于 PEMFC 的非贵金属催化剂的高性能电极。