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. 2022 Nov 4;13:6650. doi: 10.1038/s41467-022-34380-9

Fig. 4. Catalytic activities of CoOOH NR and CoOOH NS for oxygen evolution reaction.

Fig. 4

a Polarization curves of NS-S (black), NS-M (red), NS-ML (blue), and NS-L (green). The inset shows the corresponding Tafel plots; b Size-dependent activities of NS at the same loadings; c, d Correlation of the current densities with c the overall surface areas and d the lateral facet areas. NS-S is displayed in black, NS-M in red, and NR in purple. The inset in (d) is the SEM image of NR spin-coated carbon electrodes for statistical analysis. e, f TOFs at the overpotential of 450 mV when assuming cobalt atoms on (e) basal facets or (f) lateral facets are active. Standard errors for activities were calculated from the standard deviations from three measurements, and that for areas were calculated from the standard deviations of the measured particle sizes. Source data are provided as a Source Data file.