▎ 摘　　要

As the high expense and poor stability of Pt-based catalysts have severely limited the commercial applications of cathodic catalysts in fuel cells, the steps towards developing low-cost and stable catalysts for oxygen reduction reaction (ORR) have never stopped. In this work, we designed a Fe2O3 nanoparticles decorated 2D N-doped porous graphene-like carbon material (Fe(1.0)-N/C-800) from the one-step pyrolysis of low-cost and abundant substrates (-cyclodextrin, urea and FeCl3) under N-2 atmosphere. The doped N can change the charge distribution of C atoms around N atoms and offer active N species such as pyridinic-N and graphitic-N to provide more ORR active sites. The appropriate Fe2O3 nanoparticles encapsulated in the graphene-like carbon layer can enhance the electron and O-2 transfer and boost the ORR process. Therefore, the synergetic effect of Fe2O3 nanoparticles modifying and N doping can greatly promote the ORR process. The study on the poisoning of Fe3+ by SCN- further reveals that the Fe2O3 nanoparticles wrapped in the carbon layer will coordinate with N to form Fe-N-x active sites, which can further enhance ORR activity. Thus, the obtained Fe(1.0)-N/C-800 electrocatalyst possesses excellent ORR catalytic performance in alkaline media (E-onset=0.937V, E-1/2=0.832V) as well as a superior methanol tolerance and long-term test stability both in alkaline and acidic media. This work leads a simple and cost-efficient way to fabricate high-performance ORR catalysts.