Intrinsic water imbalance in AEMFC complicates the mass transport phenomena in the electrodes and causes performance loss. Because an AEMFC electrode is a complex multi-component system composed of agglomerates of carbon-supported catalyst bound to ionomer, balancing these components is critical for better water management. Herein, we clarify the influence of the three electrode parameters (ionomer content, active material loading, and active material to carbon ratio) on AEMFC performance using commercial AEM and AEI (FAA-3–50 membrane and FAA-3 ionomer) with standard precious metal catalysts (PtRu/C and Pt/C). The influence of the electrode parameters of each electrode (anode and cathode) was investigated individually. Physical and electrochemical measurements revealed that the cell performance was highly dependent on each electrode parameter for both electrodes, and it was confirmed that the supply of water by back-diffusion rather than oxygen at the cathode, as well as water flooding at the anode, limited the performance of the AEMFC. In particular, we demonstrate commercial material-based AEMFC with specific power over 3 W mg_PGM⁻¹ with low PGM loading (0.2 mg_PGM cm⁻²) by adjusting the anode and cathode electrode parameters.

AEMFC 中的内在水不平衡使电极中的传质现象复杂化并导致性能损失。因为 AEMFC 电极是一个复杂的多组分系统，由与离聚物结合的碳负载催化剂的团聚体组成，平衡这些组分对于更好的水管理至关重要。在此，我们使用商业 AEM 和 AEI（FAA-3-50 膜和 FAA-3 离聚物）和标准稀有材料阐明了三个电极参数（离聚物含量、活性材料负载量和活性材料与碳比）对 AEMFC 性能的影响。金属催化剂（PtRu/C 和 Pt/C）。分别研究了每个电极（阳极和阴极）的电极参数的影响。物理和电化学测量表明，电池性能高度依赖于两个电极的每个电极参数，并且证实通过反向扩散而不是阴极的氧气供应水以及阳极的水泛滥限制了AEMFC 的性能。特别是，我们展示了比功率超过 3 W mg 的基于商业材料的 AEMFC通过调整阳极和阴极电极参数，_PGM ^-1具有低 PGM 负载（0.2 mg _PGM cm ^-2）。