N-doped carbon nanosheet supported Fe2O3/Fe3C nanoparticles as efficient electrode materials for oxygen reduction reaction and supercapacitor application

N-doped carbon encased iron catalyst is a potential alternative of Pt/C for oxygen reduction reaction (ORR). The adjacent Fe-Nx and FexC within the [email protected]/C structure is normally identified as the main active sites toward ORR. Here, we prepared Fe2O3/Fe3C nanoparticles wrapped in nitrogen doped porous carbon nanosheets ([email protected]) via pyrolyzing the composites of L-leucine and FeCl3. The optimized sample [email protected]...