Fig. 5: Durability of flat and grooved (1 µm/3 µm) electrodes.
a–d, Comparison of performance of flat and grooved electrodes after 500 catalyst support AST cycles: polarization curves in H2/air at 100% RH, 150 kPaabs and 80 °C (a), carbon loss (C) during ASTs, measured using a non-dispersive infrared sensor (b), O2 transport resistance measured at 60% RH (c) and sheet resistance measurements (d). The equivalent circuit models are shown in Supplementary Fig. 9, parameters are shown in Supplementary Table 5 and linear regression results are shown in Supplementary Table 6.
