In:
Journal of Materials Chemistry A, Royal Society of Chemistry (RSC)
Abstract:
Due to designable chemical modifications and self-assembly structures, fullerenes have enabled an innovative platform for controlling the configuration of heteroatoms in carbon structures and improving the catalytic activity of metal–N–C systems. In most cases, the Fe–N doping in fullerene-derived carbons was achieved based on the coordination interactions of Fe species with N-containing groups. In this study, we tried to enhance the binding of Fe ions by the control oxidation of C 60 s via facile O 2 -plasma treatment. The strong interactions between Fe and oxidized C 60 s enable higher Fe doping content and promote the formation of FeN x sites during pyrolysis under NH 3 . The resultant FeN/C 60 O-900 electrode showed excellent electrocatalytic activity and high stability in the oxygen reduction reaction (ORR), surpassing the commercial Pt/C (20 wt%) catalyst and other Fe/N-doped fullerene-derived carbons. The structural analysis and simulations revealed that the presence of oxygen near FeN x can enhance the ORR activity. This study is likely the first example of driven Fe–N doping from the oxidation of C 60 carbons. It might provide new insight into controlling heteroatom doping in C 60 -derived electrodes.
Type of Medium:
Online Resource
ISSN:
2050-7488
,
2050-7496
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2023
detail.hit.zdb_id:
2702232-8
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