Figure 4
From: Enhancing Electrocatalytic Oxygen Reduction on Nitrogen-Doped Graphene by Active Sites Implantation
Electrochemical evaluation.
(A) Cyclic voltammograms (CVs) of ORR on various Electrocatalysts at the scan rate of 0.1 V s−1. (B) LSV of various electrocatalysts on RDE at 1200 revolutions per minute (rpm). (C) RRDE disk currents of I-NG (red line), Pt/C (black line), NG (blue line) and mpg-C3N4 (orange line) electrodes at a rotation rate of 1200 rpm. The Pt ring electrode was poised at 0.5 V. (D) CVs of ORR on I-NG before and after a continuous potentiodynamic swept for 5000 and 100000 cycles at room temperature (25 ± 1°C). The electrolyte used during voltammogram measurements was the O2-saturated 50 mM PBS solution (pH 7.0).
