首页|Co nanoparticles embedded N-doped hierarchical porous carbon matrix as an efficient electrocatalyst for oxygen reduction reaction
Co nanoparticles embedded N-doped hierarchical porous carbon matrix as an efficient electrocatalyst for oxygen reduction reaction
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NSTL
Elsevier
Co based catalysts are the promising substitutes for PVC catalysts in oxygen reduction reaction (ORR). However, designing efficient Co based catalysts still remains a challenge due to many restrictions including charge transfer, mass transport and utilization of active sites, etc. Herein, Co nanoparticles embedded 3D-interconnected hierarchical porous (macro/meso/microporous) carbon matrixes with carbon nanotubes as building blocks (marked as Co@h-ZIF-800) were prepared. The prepared Co@h-ZIF-800 showed fast charge transfer and maintained the channels for continuous O-2 transport. High surface area and efficient utilization of active sites also made Co@h-ZIF-800 exhibited excellent ORR performance with half-wave potential of 0.906 V (vs. RHE), 26 mV positive than commercial Pt/C. Our work can provide an effective strategy to explore efficient Co based electrocatalysts with hierarchical structure.
NSTL
Elsevier
