▎ 摘　　要

Three different types of reduced graphene oxide (rGO) were prepared starting from graphite oxide (GO) produced with the Hummers' method using three different exfoliation-reduction strategies: thermal annealing under N-2 atmosphere at 700 A degrees C, thermal annealing under H-2-N-2 (1:1 vol.) atmosphere at 500 A degrees C and ultrasonication. Then, three non-noble metal catalysts (NNMC) for the oxygen reduction reaction (ORR) were synthesized using these three different rGO as carbon supports, by impregnation of a complex formed between Fe(II) ions and 2,4,6-tris(2-pyridyl)-1,3,5-triazine (TPTZ) as source of nitrogen, followed by a pyrolysis at 800 A degrees C. The physical-chemical properties of rGO and Fe-N/rGO catalysts were characterized by N-2 physisorption, XRD, XPS, SEM, and EDX. The capacitive behavior and the ORR activity of rGO and Fe-N/rGO catalysts were measured in alkaline conditions by cyclic voltammetry (CV) and rotating disk electrode (RDE), respectively. The three different reduction-exfoliation methods used for the rGO preparation influenced the physical-chemical properties, as well as the capacitive currents and the ORR activity of both rGO and Fe-N/rGO. This provides an insight about which synthesis process could be the most convenient for the final application.