Effect of annealing on electrochemical performance of anodized Tio2 nanotubes for lithium ion batteries

Authors

Guodong DuFollow
Bin Wan, Shanghai University of Science Engineering, China
Zaiping Guo, University of WollongongFollow
Jianian Shen, Shanghai University, Shanghai, China
Ying Li
Hua-Kun Liu, University of WollongongFollow

RIS ID

44811

Publication Details

Du, G., Wan, B., Guo, Z., Shen, J., Li, Y. and Liu, H. (2011). Effect of annealing on electrochemical performance of anodized Tio₂ nanotubes for lithium ion batteries. Advanced Science Letters, 4 (2), 469-473.

Abstract

The effect of annealing on TiO₂ nanotube arrays as anode for lithium ion batteries by X-ray diffraction, field emission scanning electron microscopy, cyclic voltammetry, galvanostatic charge-discharge testing, and electrochemical impedance spectroscopy was investigated. The crystalline structure of TiO₂ nanotube can be changed by controlling the annealing temperature and the crystallization also has considerable effect on electrochemical performance. Amorphous TiO₂ annealed at 250 °C shows the highest discharge capacity in coin cell tests with a discharge capacity of about 67 μAh cm^-2 and good cycling stability during 50 charge-discharge cycles. The electrochemical impedance spectroscopy results show the smallest resistance compared to the other samples.