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학술지 Electrochemical Properties of Carbon-coated TiO2 Nanotubes as a Lithium Battery Anode Material
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저자
강근영, 이영기, 김상효, Seung Ree Seo, Jin-Chul Kim, 김광만
발행일
201208
출처
Materials Chemistry and Physics, v.137 no.1, pp.169-176
ISSN
0254-0584
출판사
Elsevier,
DOI
https://dx.doi.org/10.1016/j.matchemphys.2012.09.001
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.
키워드
Coatings, Electrochemical properties, Nanostructures, Oxides
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)