Exploiting non-noble metal bifunctional electrocatalysts for efficient oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is a feasible approach for developing clean energy. Herein, we synthesize a transition metal coordinating nitrogen (Fe/Ni-N) doped carbon material (FeNi-MNC) with unique morphology combining external diverging carbon nanotubes and internal carbon matrix with ordered macropore alignments. With the co-catalysis of Fe and Ni species and the space limiting of SiO₂ template in carbonation, the obtained FeNi-MNC shows high Fe/Ni-N contents. Profiting from the hierarchical morphology and abundant active sites, the catalyst exhibits excellent activity for ORR in 0.1 M KOH with a half-wave potential of 0.834 V and a Tafel slope of 53.1 mv dec⁻¹ being superior to Pt/C. Moreover, it only needs an overpotential of 298 mV reaching 10 mA cm⁻² for OER in 1.0 M KOH. Our work constructs a 3-dimensional porous carbon matrix integrated with 1-dimensional carbon nanotubes and 2-dimensional carbon nanosheets to enhance the catalytic performance.

利用非贵金属双功能电催化剂进行有效的氧还原反应（ORR）和氧释放反应（OER）是开发清洁能源的可行方法。在这里，我们合成了过渡金属配位的氮（Fe / Ni-N）掺杂碳材料（FeNi-MNC），具有独特的形态，结合了外部发散的碳纳米管和内部碳基体，并具有有序的大孔排列。通过Fe和Ni物种的共催化以及SiO ₂模板在碳化中的空间限制，获得了FeNi-MNC表现出高的Fe / Ni-N含量。得益于分级的形态和丰富的活性位点，该催化剂在0.1 M KOH中对ORR表现出优异的活性，其半波电势为0.834 V，Tafel斜率为53.1 mv dec ^-1优于Pt / C。此外，对于1.0M KOH中的OER ，仅需要298 mV的超电势即可达到10 mA cm ^-2。我们的工作构建了一个与一维碳纳米管和二维碳纳米片集成的三维多孔碳基体，以增强催化性能。