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http://dx.doi.org/10.9713/kcer.2012.50.1.025

Effect of Annealing Temperature on the Anode Properties of TiO2 Nanotubes for Rechargeable Lithium Batteries  

Choi, Min Gyu (Research Team of Power Control Devices, Electronics and Telecommunications Research Institute (ETRI))
Kang, Kun Young (Research Team of Power Control Devices, Electronics and Telecommunications Research Institute (ETRI))
Lee, Young-Gi (Research Team of Power Control Devices, Electronics and Telecommunications Research Institute (ETRI))
Kim, Kwang Man (Research Team of Power Control Devices, Electronics and Telecommunications Research Institute (ETRI))
Publication Information
Korean Chemical Engineering Research / v.50, no.1, 2012 , pp. 25-29 More about this Journal
Abstract
$TiO_2$ nanotubes are prepared from rutile prticles via an alkaline hydrothermal synthesis and the consequent heat treatment at $300{\sim}500^{\circ}C$. The physical and electrochemical properties of the $TiO_2$ nanotubes are characterized for use as a anode material of rechargeable lithium battery. In particular, the microscale dusts as an impurity component occurred in the purification step after the hydrothermal reaction are completely removed to yield $TiO_2$ nanotube with a higher specific surface area and more obvious crystalline phases. As the annealing temperature increases, the specific surface area is slightly decreased due to some aggregation between the isotropically dispersed nanotubes. Highest initial discharge capacity of 250 mAh $g^{-1}$ is achieved for the $TiO_2$ nanotube annealed at $300^{\circ}C$, whereas the $400^{\circ}C$ $TiO_2$ nanotube shows the superior cycle performance and high-rate capability.
Keywords
Titanium Oxide Nanotubes; Annealing Temperature; Anode Properties; Lithium Secondary Battery;
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