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Electrochemical Properties of Carbon-coated TiO2 Nanotubes as a Lithium Battery Anode Material
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- Authors
- Kun-Young Kang, Young-Gi Lee, Sanghyo Kim, Seung Ree Seo, Jin-Chul Kim, Kwang Man Kim
- Issue Date
- 2012-08
- Citation
- Materials Chemistry and Physics, v.137, no.1, pp.169-176
- ISSN
- 0254-0584
- Publisher
- Elsevier,
- Language
- English
- Type
- Journal Article
- Abstract
- To use as an anode material of lithium batteries, carbon-coated TiO 2 nanotubes are prepared by hydrothermal reaction of rutile particles, subsequent sol-gel mixing with poly(vinyl pyrrolidone), and heat treatment at 300-500 °C. The carbon-coated TiO 2 nanotubes are also characterized by morphology observation, crystalline property analysis, potentiostatic redox behaviors, and galvanostatic discharge-charge evaluations at low and high rates. When annealed at 300 °C, the amorphous phase of carbon layers which are covered on the TiO 2 nanotubes dominates the anatase TiO 2 nanocrystalline phase. When annealed at 500 °C, the carbon-coated TiO 2 nanotubes exhibit superior cyclic performance and high-rate capability, due to the crystalline phase in the carbon-coated layer formed by annealing at high temperature. © 2012 Elsevier B.V. All rights reserved.
- KSP Keywords
- Amorphous Phase, Anatase TiO 2, Carbon layer, Carbon-coated TiO 2, Crystalline properties, Discharge-charge, Electrochemical properties, Galvanostatic discharge, Heat Treatment, High Temperature, Hydrothermal reaction