Journal
IONICS
Volume 19, Issue 1, Pages 25-31Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-012-0716-x
Keywords
Hametite; Magnetite; Hollow nanosphere; Anode material; Li-ion battery
Funding
- Japan Society for the Promotion of Science [20310054]
- Grants-in-Aid for Scientific Research [20310054] Funding Source: KAKEN
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alpha-Fe2O3 and Fe3O4 hollow nanospheres of size 30 +/- 2 nm were synthesized by using polymeric micelles as a soft template for the first time. The hollow nanospheres were thoroughly characterized by transmission electron microscope, superconducting quantum interference device, X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetry and differential thermal analysis, cyclic voltammogram, and nitrogen sorption analyses. The alpha-Fe2O3 and Fe3O4 hollow nanospheres were used as anode materials in lithium-ion rechargeable batteries to investigate their electrochemical properties. The hollow particle-based electrodes exhibit high capacity, stable cycling performance, and good rate capability at different current densities. The alpha-Fe2O3 and Fe3O4 hollow nanospheres with nanosized shell domain favors fast lithium insertion/extraction processes during the repeated charge/discharges.
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