In:
Materials Advances, Royal Society of Chemistry (RSC)
Abstract:
Dual metal atoms embedded into carbon are emerging electrocatalysts due to synergistic interaction. Herein, copper and iron dual-atoms embedded in the nitrogen-doped carbon support with abundant metal-nitrogen moieties is fabricated via zinc imidazole frameworks pyrolysis. Hollow nitrogen doped carbon (HNC) containing Cu/Fe-Nx moieties (Cu:Fe/HNC) show excellent oxygen reduction activity with a half-wave potential of 0.84 V in alkaline media. Furthermore, the Cu:Fe/HNC exhibits remarkable stability and strong anti-poisoning ability due to synergistic interactio of Cu/Fe-Nx moieties in HNC architecture. Density functional theory calculations revealed the optimum adsorption and desorption of oxygen intermediate due to the synergistic interaction of Cu-Nx and Fe-Nx sites, resulting in improved oxygen reduction performance. This work provides a facile synthesis of dual metal atom catalysts for developing low-cost nonprecious metal-based ORR electrocatalysts.
Type of Medium:
Online Resource
ISSN:
2633-5409
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2023
detail.hit.zdb_id:
3031236-X
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