Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 10, Issue 12, Pages 1879-1882Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2008.09.036
Keywords
Lithium-ion batteries; Anode; Magnetite; Carbon coating; Core-shell nanostructure
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Funding
- Australian Research Council (ARC) t [DP0772999]
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Carbon coated magnetite (Fe3O4) core-shell nanorods were synthesized by a hydrothermal method using Fe2O3 nanorods as the precursor. Transmission electron spectroscopy (TEM) and high resolution TEM (HRTEM) analysis indicated that a carbon layer was coated on the surfaces of the individual Fe3O4 nanorods. The electrochemical properties of Fe3O4/carbon nanorods as anodes in lithium-ion cells were evaluated by cyclic voltammetry, ac impedance spectroscopy, and galvanostatic charge/discharge techniques. The as-prepared Fe3O4/C core-shell nanorods show an initial lithium storage capacity of 1120 mAh/g and a reversible capacity of 394 mAh/g after 100 cycles, demonstrating better performance than that of the commercial graphite anode material. (C) 2008 Elsevier B.V. All rights reserved.
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