fig15
Figure 15. Schematic water distribution on a cathode with (A) or without(B) microporous layer. (C) Polarization curves for the MEAs at 35 °C operations (100% and 76% RH). These figures are quoted with permission from Tabe et al.[130]. (D) The hydrophobic group (Ar-CF3) was modified in Fe-N-C catalysts to boost the resistance to carbon corrosion and water flooding. This figure is quoted with permission from Wang et al.[133]. (E) H2-O2 PEMFCs polarization and power density curves of the cells with Pt/C@Nafion and Pt/C@SDT-Nafion measured at 80 °C and 100% RH under 150 kPa. This figure is quoted with permission from Zhang et al.[134]. (F, G) Schematic representation of ionomer distribution and gas transport at high and low RH in standard and nanofiber electrode layers. These figures are quoted with permission from Kabir et al.[135]. (H) Schematic of the improvement of ORR activity caused by the enriched protons. This figure is quoted with permission from Liu et al.[136].
