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Fig. 4 | Nanoscale Research Letters

Fig. 4

From: Heavily Graphitic-Nitrogen Self-doped High-porosity Carbon for the Electrocatalysis of Oxygen Reduction Reaction

Fig. 4

a LSV curves of KB-Z-900 in N2 versus O2 saturated KOH solution at different rotation rates; b LSV curves of KB350Z-900 in N2 versus O2 saturated KOH solution at different rotation rates; c Koutecky-Levich plots of jd − 1 versus ω− 1/2 obtained from (b) at the given potentials (0.25–0.6 V). Inset is the plots of n versus potential obtained from (a) and (b); d LSV curves of KB350Z-900 and JM Pt/C before and after CV for 5000 cycles in O2 saturated KOH solution; Inset is amperometric i-t curves at 0.9 V versus RHE for methanol-tolerant testing

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