Table 2 The comparison of ORR performance of the reported metal oxide/graphene catalysts.

From: General Solvent-dependent Strategy toward Enhanced Oxygen Reduction Reaction in Graphene/Metal Oxide Nanohybrids: Effects of Nitrogen-containing Solvent

Catalyst

Onset potentials

Current peak position

Reference

CNG-DMF

0.980 V (vs. RHE) −0.035 V (vs. Ag/AgCl)

0.828 V (vs. RHE) −0.1379 (vs Ag/AgCl)

This work

FNG-DMF

0.884 V (vs. RHE) −0.089 V (vs. Ag/AgCl)

0.767 (vs. RHE) −0.207 (vs. Ag/AgCl)

This work

C-Fe3O4

−0.187 V (vs. Ag/AgCl)

−0.340 V (vs. Ag/AgCl)

Ref. 22

Mn3O4/N-rmGO

−0.2 V (vs. Ag/AgCl)

−0.3 (vs. Ag/AgCl)

Ref. 21

Co3O4/N-rmGO

0.931 V (vs. RHE)

0.859 V (vs. RHE)

Ref. 3

NiCo2S4@N/S-rGO

−0.11 V (vs. Ag/AgCl)

−0.22 V (vs. Ag/AgCl)

Ref. 20

Fe3O4/N-GAs

−0.19 V(vs. Ag/AgCl)

−0.34 (vs. Ag/AgCl)

Ref. 4

rGFe-800a

−0.09(vs. Ag/AgCl)

−0.48 (vs. Ag/AgCl)

Ref. 23

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