Fig. 4: ORR activities of FeAzPc-4N-DMSO/oxMWCNT_20 wt%. | NPG Asia Materials

Fig. 4: ORR activities of FeAzPc-4N-DMSO/oxMWCNT_20 wt%.

From: Fe azaphthalocyanine unimolecular layers (Fe AzULs) on carbon nanotubes for realizing highly active oxygen reduction reaction (ORR) catalytic electrodes

Fig. 4

a Oxygen reduction reaction polarization curves at different rotation rates in an O2-saturated 0.1 M KOH solution. b Koutecky–Levich plots calculated from the results in a. c HO2− yield measured for Pt/C (black) and FeAzPc-4N-DMSO/oxMWCNT_20 wt% (red). d Tafel plots for Pt/C (black) and FeAzPc-4N-DMSO/oxMWCNT_20 wt% (red). e Chronoamperometric test curves for Pt/C (black) and FeAzPc-4N-DMSO/oxMWCNT_20 wt% (red) with a given potential of 0.5 V vs. reversible hydrogen electrode in an O2-saturated 0.1 M KOH solution at a rotation speed of 1600 rpm. f Linear sweep voltammetric (LSV) curves for Pt/C (black) and FeAzPc-4N-DMSO/oxMWCNT_20 wt% (red) before (dashed) and after (solid) the chronoamperometric test. g LSV curves for Pt/C (black) and FeAzPc-4N-DMSO/oxMWCNT_20 wt% (red) in 0.1 M KOH (dashed) and (solid) in 0.1 M KOH with 3.0 M methanol

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