SnO2 nanocrystals on self-organized TiO2 nanotube array as three-dimensional electrode for lithium ion microbatteries

Guodong Du; Zaiping Guo; Peng Zhang; Ying Li; Mingbo Chen; David Wexler; Huakun Liu

doi:10.1039/C0JM00330A

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SnO₂nanocrystals on self-organized TiO₂nanotube array as three-dimensional electrode for lithium ion microbatteries†

Guodong Du,^a Zaiping Guo,*^ab Peng Zhang,^a Ying Li,^c Mingbo Chen,^d David Wexler^b and Huakun Liu^a

Author affiliations

* Corresponding authors

^a Institute for Superconducting & Electronic Materials, University of Wollongong, NSW, Australia
E-mail: zguo@uow.edu.au
Fax: +61 2 4221 5731
Tel: +61 2 4221 5225

^b School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, NSW, Australia

^c School of Materials Science & Engineering Shanghai University, Shanghai, PR China

^d Shanghai Institute of Space-Power Source, 388 Cangwu Rd, Shanghai, PR China

Abstract

Three-dimensional (3D) anodes have been prepared for lithium ion microbatteries by depositing SnO₂ nanocrystals into self-organized TiO₂ nanotube arrays through the solvothermal method, with the SnO₂ crystal size less than 5 nm. The 3D SnO₂–TiO₂ anodes exhibit excellent electrochemical performance with a good capacity retention of up to 70.8% over 100 cycles in the voltage range of 0.05–2.5 V. SnO₂ enhances the capacity to more than double that of bare TiO₂, while TiO₂ nanotubes accommodate the volume changes of SnO₂ during charge/discharge cycling. The amount of SnO₂ loading can be controlled by varying the reaction time. The capacity of the 3D electrodes is controlled by the TiO₂ tube length as well as by the amount of SnO₂ loading. The maximum reversible capacity of the present samples can reach as high as about 300 µA h cm⁻².

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Supplementary files

FESEM images and EDS results, cycling stability of different length TiO ₂ and SnO ₂ loading samples and rate capability curves, TEM images of cycled SnO ₂/TiO ₂. PDF (19689K)

Article information

DOI: https://doi.org/10.1039/C0JM00330A
Article type: Paper
Submitted: 06 Feb 2010
Accepted: 13 May 2010
First published: 09 Jun 2010

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J. Mater. Chem., 2010,20, 5689-5694

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SnO₂ nanocrystals on self-organized TiO₂ nanotube array as three-dimensional electrode for lithium ion microbatteries

G. Du, Z. Guo, P. Zhang, Y. Li, M. Chen, D. Wexler and H. Liu, J. Mater. Chem., 2010, 20, 5689 DOI: 10.1039/C0JM00330A

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Journal of Materials Chemistry