Figure 5 | Scientific Reports

Figure 5

From: Facile, scalable synthesis of edge-halogenated graphene nanoplatelets as efficient metal-free eletrocatalysts for oxygen reduction reaction

Figure 5

(a) Current-time (i–t) chronoamperometric response of the pristine graphite, XGnPs and commercial Pt/C electrodes at −0.25 V vs. Ag/AgCl in O2-saturated 0.1 M aq. KOH solution at a rotation rate of 1600 rpm. Note that the blue and green curves are almost overlapped with each other. (b) The current-time (j–t) chronoamperometric responses for ORR at the pristine graphite, XGnPs and commercial Pt/C electrocatalysts in an O2-saturated 0.1 M aq. KOH solution at −0.40 V vs. Ag/AgCl and 3.0 M methanol or carbon monoxide (CO, 10 ppm/min) were added at around 360 s.

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