Enhancing Electrocatalytic Kinetics via Synergy of Co Nanoparticles and Co/Ni–N4–C- and N-Doped Porous Carbon

Transition-metal species embedded in carbon have sparked intense interest in the fields of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). However, improvement of the electrocatalytic kinetics remains a challenge caused by the synergistic assembly. Here, we propose a biochemical strategy to fabricate the Co nanoparticles (NPs) and Co/Ni-N