Figure 9

The comparison of ORR performance of MNG and FNG composites prepared in different solvents (DMF and ethanol).
The CV comparison of MNG (a) and FNG composites (c) with N2-saturated (dashed lines) and O2-saturated (solid lines) conditions. The RRDE results of MNG (b) and FNG nanohybrids (e). The electron transfer numbers of MNG and FNG are shown in (c) and (f), respectively.