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Journal Article 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
DOI
https://dx.doi.org/10.1016/j.matchemphys.2012.09.001
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