Abstract
We demonstrate the formation of a highly conductive, Fe0/Fe 3O4 nanocomposite electrode by the hydrogen reduction process. Fe2O3 nanobundles composed of one-dimensional nanowires were initially prepared through thermal dehydrogenation of hydrothermally synthesized FeOOH. The systematic phase and morphological evolutions from Fe2O3 to Fe2O 3/Fe3O4, Fe3O4, and finally to Fe/Fe3O4 by the controlled thermochemical reduction at 300 °C in H2 were characterized using x-ray diffraction (XRD) and transmission electron microscopy (TEM). The Fe/Fe 3O4 nanocomposite electrode shows excellent capacity retention (∼540mAhg-1 after 100 cycles at a rate of 185mAg -1), compared to that of Fe2O3 nanobundles. This enhanced electrochemical performance in Fe/Fe3O4 composites was attributed to the formation of unique, core-shell nanostructures offering an efficient electron transport path to the current collector.
| Original language | English |
|---|---|
| Article number | 295205 |
| Journal | Nanotechnology |
| Volume | 20 |
| Issue number | 29 |
| DOIs | |
| Publication status | Published - 2009 Jul 30 |
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ASJC Scopus subject areas
- Bioengineering
- Chemistry(all)
- Electrical and Electronic Engineering
- Mechanical Engineering
- Mechanics of Materials
- Materials Science(all)
Cite this
Enhanced cycling performance of an Fe0/Fe3O 4 nanocomposite electrode for lithium-ion batteries. / Lee, Gwang Hee; Park, Jae Gwan; Sung, Yun Mo; Chung, Kyung Yoon; Cho, Won Il; Kim, Dong-Wan.
In: Nanotechnology, Vol. 20, No. 29, 295205, 30.07.2009.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Enhanced cycling performance of an Fe0/Fe3O 4 nanocomposite electrode for lithium-ion batteries
AU - Lee, Gwang Hee
AU - Park, Jae Gwan
AU - Sung, Yun Mo
AU - Chung, Kyung Yoon
AU - Cho, Won Il
AU - Kim, Dong-Wan
PY - 2009/7/30
Y1 - 2009/7/30
N2 - We demonstrate the formation of a highly conductive, Fe0/Fe 3O4 nanocomposite electrode by the hydrogen reduction process. Fe2O3 nanobundles composed of one-dimensional nanowires were initially prepared through thermal dehydrogenation of hydrothermally synthesized FeOOH. The systematic phase and morphological evolutions from Fe2O3 to Fe2O 3/Fe3O4, Fe3O4, and finally to Fe/Fe3O4 by the controlled thermochemical reduction at 300 °C in H2 were characterized using x-ray diffraction (XRD) and transmission electron microscopy (TEM). The Fe/Fe 3O4 nanocomposite electrode shows excellent capacity retention (∼540mAhg-1 after 100 cycles at a rate of 185mAg -1), compared to that of Fe2O3 nanobundles. This enhanced electrochemical performance in Fe/Fe3O4 composites was attributed to the formation of unique, core-shell nanostructures offering an efficient electron transport path to the current collector.
AB - We demonstrate the formation of a highly conductive, Fe0/Fe 3O4 nanocomposite electrode by the hydrogen reduction process. Fe2O3 nanobundles composed of one-dimensional nanowires were initially prepared through thermal dehydrogenation of hydrothermally synthesized FeOOH. The systematic phase and morphological evolutions from Fe2O3 to Fe2O 3/Fe3O4, Fe3O4, and finally to Fe/Fe3O4 by the controlled thermochemical reduction at 300 °C in H2 were characterized using x-ray diffraction (XRD) and transmission electron microscopy (TEM). The Fe/Fe 3O4 nanocomposite electrode shows excellent capacity retention (∼540mAhg-1 after 100 cycles at a rate of 185mAg -1), compared to that of Fe2O3 nanobundles. This enhanced electrochemical performance in Fe/Fe3O4 composites was attributed to the formation of unique, core-shell nanostructures offering an efficient electron transport path to the current collector.
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UR - http://www.scopus.com/inward/citedby.url?scp=67651152926&partnerID=8YFLogxK
U2 - 10.1088/0957-4484/20/29/295205
DO - 10.1088/0957-4484/20/29/295205
M3 - Article
C2 - 19567958
AN - SCOPUS:67651152926
VL - 20
JO - Nanotechnology
JF - Nanotechnology
SN - 0957-4484
IS - 29
M1 - 295205
ER -