fig10
Figure 10. (A) Illustration of F-FeWO4/NC; (B) Free energy diagram at 1.23 eV for ORR over (111) surfaces during 4e- ORR and the Fe-O bond length after OOH being absorbed on (111) surfaces of FeWO4 and F-FeWO4[149]; (C) The synthetic scheme of Co3O4@ND-CN; (D) The partial density of states of ND-CN and Co3O4 in Co3O4@ND-CN[150]; (E) Schematic diagram of preparation procedure for 300NiFe-Mi-C[151]. ORR: Oxygen reduction reaction.
