Fe3+ stabilized 3D cross-linked glycine-melamine formaldehyde networks as precursor for highly efficient oxygen reduction catalyst in alkaline media

N-doped pod-like graphitic carbon nanotubes with encapsulated Fe3C derived from a cross-linked iron glycine- melamine formaldehyde 3D network precursor as efficient electrocatalyst for oxygen reduction reaction in alkaline media. [Display omitted] •Fe3C encapsulated N-doped graphitic carbon nanotube...

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Bibliographic Details
Published in:Materials letters 2020-04, Vol.264, p.127365, Article 127365
Main Authors: Kottarathil, Shijina, Illathvalappil, Rajith, S., Nisa, G.S., Sailaja, A., Peer Mohamed, N. Nair, Balagopal, Gopinathan M., Anilkumar, Kurungot, Sreekumar, Yamaguchi, Takeo, U.S., Hareesh
Format: Article
Language:English
Subjects:
Catalysts
Crosslinking
Fuel cell
Glycine
Graphitic carbon alloy
Graphitization
Iron carbide
Iron carbides
Materials science
Melamine
Melamine formaldehyde resins
ORR
Precursors
Pyrolysis
Reduction
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Summary:N-doped pod-like graphitic carbon nanotubes with encapsulated Fe3C derived from a cross-linked iron glycine- melamine formaldehyde 3D network precursor as efficient electrocatalyst for oxygen reduction reaction in alkaline media. [Display omitted] •Fe3C encapsulated N-doped graphitic carbon nanotubes from 3D polymer networks.•It is a template-free synthesis.•Fe3+ has dual role in catalyzing tube formation and also ORR in alkaline medium.•Synergistic effect of Fe3C and N-doped carbon enhance the ORR activity. Development of inexpensive oxygen reduction electrocatalyst with high activity and durability is very important. Herein, iron carbide encapsulated pod-like graphitic carbon structures were prepared by simple pyrolysis involving Fe-glycine complex integrated melamine–formaldehyde resin precursor. The best catalyst among those studied, Fe-Gly 2 MF-C, possessing high degree of graphitization (ID/IG = 0.99) and enhanced specific surface area (205 m2/g) exhibited the highest ORR activity with a half-wave potential of 0.80 V in alkaline medium through the four-electron reduction pathway.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2020.127365