Figure 7.
Oxygen reduction reaction (ORR) polarization curves of rGO10-3 (a), rGO100-3 (b), rGO325-3 (c), NrGO10-4 (d), NrGO100-4 (e), and NrGO325-4 (f) modified electrodes at different rotation rates in KOH purged with O2 at 0.005 V s−1.
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