The Fe–N–C active site containing non-precious metal catalysts (NPMCs) as the substitute to platinum-based catalysts are highly desired for oxygen reduction reaction (ORR) but it's a huge challenge to achieve such a high-performance and long term stabile one. In this study, the iron nanoparticles-implanted polyaniline (${\text{Fe}}_{NPs}$@PANI) metal–organic–frameworks (MOFs) on reduced graphene oxide (rGO) has been synthesized through metal-ligand strategy via a simple chemical process. Strong interaction has been observed between ${\text{Fe}}_{NPs}$ and nitrogen in PANI suggesting abundant Fe–N–C active sites in the ${\text{Fe}}_{NPs}$@PANI/rGO catalyst. Owing to the Fe–N–C active sites with less amount of oxygenated carbon in the molecular scale and mesoporous channels with the synergy of PANI and graphene in microscale, the ${\text{Fe}}_{NPs}$@PANI/rGO catalyst exhibits excellent catalytic activity and stability than the benchmark Pt/C catalyst towards ORR in respect to the onset potential and half-wave potential. Very importantly, the Fe–N–C active sites in ${\text{Fe}}_{NPs}$@PANI are comparatively better active against SCN⁻ and methanol poisoning than bare ${\text{Fe}}_{NPs}$/rGO during ORR.

氧还原反应（ORR）非常需要含有Fe-NC活性位点的非贵金属催化剂（NPMC）来替代铂基催化剂，但要实现如此高性能和长期的应用，这是一个巨大的挑战稳定的。在这项研究中，植入铁纳米粒子的聚苯胺（${\text{铁}}_{ñPs}$通过简单的化学过程通过金属配体策略合成了氧化石墨烯（rGO）上的金属有机框架（MOF）。已经观察到${\text{铁}}_{ñPs}$ PANI中的氮和氮表明，该区域中大量的Fe–N–C活性位点 ${\text{铁}}_{ñPs}$@ PANI / rGO催化剂。由于Fe–N–C的活性位点在分子规模和中孔通道中具有较少的氧化碳，并且在微尺度上具有PANI和石墨烯的协同作用，因此${\text{铁}}_{ñPs}$就起始电势和半波电势而言，@ PANI / rGO催化剂对ORR的性能优于基准Pt / C催化剂。非常重要的是，${\text{铁}}_{ñPs}$@PANI是相对较好的活性针对SCN ^-和甲醇比裸中毒${\text{铁}}_{ñPs}$/ rGO在ORR期间。