Issue 9, 2024

Carbon-coated FeCoNi nanocatalysts for the electrocatalytic oxygen reduction reaction

Abstract

Developing low-cost, high-activity transition metal-based oxygen reduction electrocatalysts to replace noble metals in oxygen reduction reactions continues to pose a notable difficulty in the field of research. In this work, a straightforward approach was employed to fabricate Fe, Co, Ni-encapsulated zeolite imidazolate framework (ZIF8) precursors, which were later subjected to pyrolysis to yield carbon-coated FeCoNi nanoparticles (FeCoNi/NC). The obtained FeCoNi/NC catalyst exhibited irregularly distributed nanotubes with abundant active sites on its surface. The electrochemical experiments conducted revealed that the oxygen reduction reaction in an alkaline electrolyte exhibited a half-wave potential of 0.84 V (vs. RHE), which is similar to that of the commercially available Pt/C. The self-made Zn–air battery displayed a narrow discharge voltage gap (0.77 V) and exhibited good cycling stability. These findings provide significant contributions to the understanding and development of multi-metallic electrocatalysts derived from zeolite imidazolate frameworks (ZIFs).

Graphical abstract: Carbon-coated FeCoNi nanocatalysts for the electrocatalytic oxygen reduction reaction

Supplementary files

Article information

Article type
Paper
Submitted
18 Dec 2023
Accepted
02 Apr 2024
First published
02 Apr 2024

Catal. Sci. Technol., 2024,14, 2638-2645

Carbon-coated FeCoNi nanocatalysts for the electrocatalytic oxygen reduction reaction

H. Huang, C. Zhang, H. Li, J. Wang, Z. Chen, Y. He, Y. Li, J. Hu, X. Liu, X. Deng and S. Shi, Catal. Sci. Technol., 2024, 14, 2638 DOI: 10.1039/D3CY01746J

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