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Bottom-up in situ formation of Fe3O4 nanocrystals in a porous carbon foam for lithium-ion battery anodes

Yoon, Taegyun, Chae, Changju, Sun, Yang-Kook, Zhao, Xin, Kung, Harold H., Lee, Jung Kyoo·2011·Journal of Materials Chemistry

Abstract

A facile and scalable process for the in situ formation of Fe3O4 nanocrystals in a pre-formed carbon foam (CF) (Fe3O4/CF) was developed, which involved impregnation of an aqueous iron nitrate solution onto CF followed by controlled thermal treatment in an inert atmosphere. N2adsorption/desorption and BET measurements showed that the CF was a mesoporous carbon with a high pore volume and specific surface area. Transmission electron microscopy, scanning electron microscopy, X-ray diffraction measurement, thermogravimetric analysis, and X-ray photoelectron spectroscopy (XPS) revealed that 5–50 nm Fe3O4 nanocrystals at a high loading of 78.7 wt% were formed preferentially in the confined pores of CF. When tested for anode material in a Li ion half-cell, the Fe3O4/CF composite was far superior to unsupported Fe3O4 nanocrystals, exhibiting significantly improved Coulombic efficiencies and cycling stability and achieving >780 mA h g−1 after 50 deep charge–discharge cycles with >95% cycling efficiency.

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Metadata

Authors
Yoon, T., Chae, C., Sun, Y.-K., Zhao, X., Kung, H. H., & Lee, J. K.
Venue
Journal of Materials Chemistry
Published
2011
Volume
21
Issue
43
Pages
17325
ISSN
  • 0959-9428 (ISSN-L)
  • 1364-5501
OpenAlex
W2086147304
Cited by
221
References
1
FWCI
16.49
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Bottom-up in situ formation of Fe3O4 nanocrystals in a porous carbon foam for lithium-ion battery anodes. https://app.cochat.ai/papers/10.1039/c1jm13450g
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Yoon, T., Chae, C., Sun, Y.-K., Zhao, X., Kung, H. H., & Lee, J. K. (2011). Bottom-up in situ formation of Fe3O4 nanocrystals in a porous carbon foam for lithium-ion battery anodes. Journal of Materials Chemistry. https://doi.org/10.1039/c1jm13450g

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