Synthesis of uniform TiO2@carbon composite nanofibers as anode for lithium ion batteries with enhanced electrochemical performance

Zunxian Yang; Guodong Du; Qing Meng; Zaiping Guo; Xuebin Yu; Zhixin Chen; Tailiang Guo; Rong Zeng

doi:10.1039/C2JM14852H

Synthesis of uniform TiO₂@carbon composite nanofibers as anode for lithium ion batteries with enhanced electrochemical performance†

Zunxian Yang,*^a Guodong Du,^b Qing Meng,^c Zaiping Guo,*^bc Xuebin Yu,*^d Zhixin Chen,^c Tailiang Guo^a and Rong Zeng^b

Author affiliations

* Corresponding authors

^a National & Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fuzhou, P. R. China
E-mail: yangzunxian@hotmail.com
Fax: +61 2 4221 5731
Tel: +61 2 4221 5225

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

^c School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, Australia
E-mail: zguo@uow.edu.au
Fax: +61 2 4221 5731
Tel: +61 2 4221 5225

^d Department of Materials Science, Fudan University, Shanghai, P. R. China
E-mail: yuxuebin@fudan.edu.cn
Fax: +61 2 4221 5731
Tel: +61 2 4221 5225

Abstract

Very large area, uniform TiO₂@carbon composite nanofibers were easily prepared by thermal pyrolysis and oxidization of electrospun titanium(IV) isopropoxide/polyacrylonitrile (PAN) nanofibers in argon. The composite nanostructures exhibit the unique feature of having TiO₂ nanocrystals encapsulated inside a porous carbon matrix. The unique orderly-bonded nanostructure, porous characteristics, and highly conductive carbon matrix favour excellent electrochemical performance of the TiO₂@carbon nanofiber electrode. The TiO₂@carbon hybrid nanofibers exhibited highly reversible capacity of 206 mAh g⁻¹ up to 100 cycles at current density of 30 mA g⁻¹ and excellent cycling stability, indicating that the composite is a promising anode candidate for Li-ion batteries.

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Article information

DOI: https://doi.org/10.1039/C2JM14852H
Article type: Paper
Submitted: 28 Sep 2011
Accepted: 09 Jan 2012
First published: 15 Feb 2012

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J. Mater. Chem., 2012,22, 5848-5854

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Synthesis of uniform TiO₂@carbon composite nanofibers as anode for lithium ion batteries with enhanced electrochemical performance

Z. Yang, G. Du, Q. Meng, Z. Guo, X. Yu, Z. Chen, T. Guo and R. Zeng, J. Mater. Chem., 2012, 22, 5848 DOI: 10.1039/C2JM14852H

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Journal of Materials Chemistry