Fig. 4: Electrocatalytic performance of catalysts.
From: Locking interstitial hydrogen atoms in Pd metallenes for efficient oxygen reduction reaction
a At a scan rate of 50 mV s-1 and temperature of 298 K, CV curves were collected in N2-saturated 0.1 M KOH solution. b In O2-saturated 0.1 M KOH, LSV curves for ORR were measured at 298 K using a scan rate of 10 mV s−1 and a rotating speed of 1600 rpm. c Corresponding Tafel plots. d The comparisons in MA and SA at 0.95 V. The error bars indicate the standard deviation calculated from three separate experimental replicates. e Durability performance of LSV evolutions, f changes in MA and SA of PdMnHx/C before and after the durability test over multiple potential-scanning cycles. Note that the current density is normalized by the area of the glassy carbon substrate (0.196 cm2). The solution resistance (Rs = 40 ± 5 Ω) was obtained from electrochemical impedance spectroscopy (EIS) measurements. g Schematic illustration of ZABs. h Discharge and power density curves, i The current range of 10 to 100 mA cm−2 was applied during galvanostatic discharge testing of PdMnHx metallenes/C and commercial Pt/C. Source data are provided as a Source Data file.
