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- Title
High Rate Capability of Fe/FeO/Fe<sub>3</sub>O<sub>4</sub> Composite as Anode Material for Lithium-Ion Batteries.
- Authors
Shi, L.; He, Y. D.; Xia, X. H.; Jian, Z. M.; Liu, H. B.
- Abstract
Fe/FeO/Fe3O4 composite was synthesized by a simple solid method using ferric citrate and phenolic resin as raw materials. The reaction processes of raw materials mixture were characterized by thermogravimetric analysis (TGA) under nitrogen. X-Ray diffraction (XRD) and scanning electron microscopy (SEM) were used to investigate the structure and morphology of the products. The results showed that the obtained material was octahedral Fe/FeO/Fe3O4 composite with a size of 2-4 μm. The electrochemical performances of Fe/FeO/Fe3O4 composite as anode material were also evaluated, which exhibited a stable specific capacity of 260.3 mAh g-1 and an ideal initial coulombic efficiency of 90.8% in the range of 0.05∼3 V at the 5C rate. A good rate capacity of Fe/FeO/Fe3O4 composite electrode was also shown by the charge-discharge testing even at the rate of 60C. The better rate capability of Fe/FeO/Fe3O4 electrode could be measured in higher temperature.
- Subjects
IRON compounds; ANODES; LITHIUM-ion batteries; CHEMICAL reactions; THERMOGRAVIMETRY; X-ray diffraction; SCANNING electron microscopy
- Publication
Journal of the Iranian Chemical Society, 2010, Vol 7, Issue 3, p721
- ISSN
1735-207X
- Publication type
Article
- DOI
10.1007/BF03246062