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. 2021 Oct 18;118(43):e2107332118. doi: 10.1073/pnas.2107332118

Fig. 3.

Fig. 3.

H2/CO electrooxidation and fuel cell test results of the different catalysts. (A) COOR linear sweep voltammetry (LSV) curves with the scanning rate at 20 mV⋅s−1 and rotating speed at 1,600 rpm on RDE. (B) The IrRu-N-C catalysts’ signals of CO2 in a thin-layer online MS cell in the presence of saturated CO in 0.1 M HClO4 at different potential. (C) H2-O2 PEMFC cell performance of different anode catalysts at 95 °C with 200 kPa back pressure and 100% RH with metal loading 24 μgmetal⋅cm−2 (IrRu-N-C and Ir-N-C), 0.1 mgmetal⋅cm−2 (Pt/C), and 0.4 mgmetal⋅cm−2 (PtRu/C), respectively. (D) H2-Air PEMFC cell performance of 24 μgmetal⋅cm−2 IrRu-N-C and 0.4 mgmetal⋅cm−2 (PtRu/C) at 80 °C with 100 kPa back pressure and 100% RH. (E) H2-x ppm (x = 10, 50, 100, 1,000) CO-Air PEMFC maximum peak power density of 24 μgmetal⋅cm−2 IrRu-N-C and 0.4 mgmetal⋅cm−2 (PtRu/C) at 80 °C with 50 kPa back pressure and 100% RH. (F) TOF of IrRu-N-C at different temperatures at CO atmosphere.