Co NP/NC hollow nanoparticles derived from yolk-shell structured ZIFs@polydopamine as bifunctional electrocatalysts for water oxidation and oxygen reduction reactions

Co NP/NC bifunctional electrocatalysts with unique hollow morphology and uniformly distributed cobalt nanoparticles were synthesized from yolk-shell structured ZIFs@polydopamine, in which PDA shell acted both as protection layer and carbon source during high-temperature pyrolysis process.67