상세정보
학술지
Electrochemical Properties of Carbon-coated TiO2 Nanotubes as a Lithium Battery Anode Material
- 발행일
- 201208
- 출처
- Materials Chemistry and Physics, v.137 no.1, pp.169-176
- ISSN
- 0254-0584
- 출판사
- Elsevier,
- 협약과제
- 11SB1300, 통합형 플랙서블 필름 전지 시스템 개발, 김광만
- 초록
- 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 제안 키워드
- Amorphous Phase, Anatase TiO 2, Carbon layer, Carbon-coated TiO 2, Crystalline properties, Discharge-charge, Galvanostatic discharge, High Temperature, Hydrothermal reaction, Lithium battery anode, Poly (vinyl pyrrolidone)(PVP)