▎ 摘 要
A Fe, N and S multielement co-doped reduced graphene oxide (Fe-N-S/rGO) was successfully prepared using a one-pot method by directly pyrolyzing a mixture of graphene oxide (GO), FeCl3, melamine and sulfur in N-2 flow, during which deoxidization of GO and multielement co-doping are realized simultaneously. This catalyst shows excellent oxygen reduction activity in an alkaline medium, with an onset potential of 0.95 V (vs. RHE) and a kinetic-limiting current density of 4.78 mA cm(-2) at 0.68 V (vs. RHE), which is superior to that of commercial Pt/C. Furthermore, it exhibits long-term stability, excellent methanol tolerance and high selectivity for the four-electron reduction pathway. (C) 2014 Elsevier B.V. All rights reserved.