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A series of novel and high-performing oxygen reduction reaction(ORR)catalysts based on N/S-Me-doped(Me = Fe,Co,Ni)hierarchical porous carbons(N/S-Fe-PC,N/S-Co-HPC and N/S-Ni-HPC)have been synthesized by a green and cost-effective method combining a simple silicate templated two-step graphitization of the impregnated carbon.After optimization of the porous structures and enlargement of the BET specific surface area by combining the silicate template and the Fe-,Co-and Ni-metal sulfates,the obtained N/S-Me-HPC catalysts exhibit excellent ORR performance in both alkaline and acidic media.In particular,N/S-Fe-HPC shows superior catalytic ORR performance compared to commercially available 20%Pt/C in alkaline medium reflected by the onset potential of 0.98V and half-wave potential of 0.86 V,and comparable ORR activity in acidic media with the onset potential of 0.84V and half-wave potential of 0.73 V.In addition,the N/S-Fe-HPC catalyst exhibits excellent long-term stability and a high methanol tolerance.The outstanding electrochemical performance of such catalysts thereby makes it possible for these non-noble catalysts to replace the commercial Pt/C in both fuel cell and metal-air battery applications.