Constrained-volume assembly of organometal confined in polymer to fabricate multi-heteroatom doped carbon for oxygen reduction reaction

摘要: The design and preparation of non-precious metal carbon-based nanocomposites are critical to the development efficient catalysts for technologies ranging from water splitting fuel cell. Here, we present a constrained-volume self-assembly process one-step continuous precipitation-induced formation soft colloidal particles, in which hydrophobic organoferrous compound, (Ph3P)2Fe(CO)3, is encapsulated within poly(styrene-co-acrylonitrile) nanoparticles (NPs). protective confining polymer matrix ensures uniform carbonization dispersion (Ph3P)2Fe(CO)3 carbon after pyrolysis process. obtained NPs successfully co-doped with Fe, P N relatively high surface area ∼380 m2 g−1. Fe-P-N-doped catalyst exhibits catalytic performance stability toward oxygen reduction reaction both alkaline acidic electrolytes via favorable four-electron pathway. Meanwhile, capability can be tailored by tunable nanostructures.