Fig. 5: PEMFCs performance of PNAC-o-Pt3Fe/C, o-Pt3Fe/C and commercial Pt/C.
a H2-O2 polarization curves and power density plots of the MEAs with PNAC-o-Pt3Fe/C and commercial Pt/C as cathode catalysts, respectively. b, c H2-air polarization curves (b) and power density plots (c) of MEAs with PNAC-o-Pt3Fe/C, o-Pt3Fe/C, and commercial Pt/C as cathode, respectively. d Activity comparisons of PNAC-o-Pt3Fe/C, o-Pt3Fe/C and commercial Pt/C-based fuel cells in the regions of low and high current densities. e H2-air fuel cells stability of PNAC-o-Pt3Fe/C and o-Pt3Fe/C tested at 0.5 V. In all MEAs, the anode catalyst was Pt/C with a loading of 0.2 mgPt cm−2, while the cathode Pt loading was 0.15 mgPt cm−2. The temperature was set at 353.15 K, relative humidity at 100%, and back pressure at 0.2 MPa. In the H2-O2 fuel cells, flow rates for H2 and O2 were fixed at 0.35 L min−1 and 0.8 L min−1, respectively. In the H2-air fuel cells, flow rates for H2 and air were fixed at 0.35 L min−1 and 1.2 L min−1, respectively. Source data for (a–e) were provided as a Source Data file.
