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Issue 22, 2012
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Synthesis of graphene-supported Li4Ti5O12nanosheets for high rate battery application†

Yufeng Tang,a   Fuqiang Huang,*ab   Wei Zhao,a   Zhanqiang Liua  and  Dongyun Wana  
Author affiliations

* Corresponding authors

a CAS Key Laboratory of Materials for Energy Conversion and State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
E-mail: huangfq@mail.sic.ac.cn
Fax: +86 21 52416360
Tel: +86 21 52411620

b State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, China

Abstract

The composite structure of Li4Ti5O12 (LTO) nanosheets rooted on two-dimensional graphene (GR) was proposed to achieve an enhanced rate performance for high rate lithium ion batteries. Such a nanostructured material of graphene-supported Li4Ti5O12 nanosheets (GR-LTOs) was fabricated by using TiO2 colloid-containing graphene oxide (GO) sheets as precursor in a hydrothermal reaction. TiO2 colloids serve as the seeds to realize the growth of LTO on GR and ensure the tight bonding between GR and LTO to benefit the charge transfer from the two types of sheets. The GR-LTOs sample possesses excellent electrochemical properties with good cycle stability and a high specific capacity of 140 mA h gāˆ’1 at 20 C. It demonstrates that LTO nanosheets, graphene sheets, and their tightly-bonded interfaces provide short ion diffusion distance and good electron conduction in such a composite structure.

Graphical abstract: Synthesis of graphene-supported Li4Ti5O12 nanosheets for high rate battery application

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Supplementary files

Article information

https://doi.org/10.1039/C2JM30624G
Submitted
01 Feb 2012
Accepted
23 Mar 2012
First published
30 Mar 2012
J. Mater. Chem., 2012,22, 11257-11260
Article type
Paper
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Synthesis of graphene-supported Li4Ti5O12 nanosheets for high rate battery application

Y. Tang, F. Huang, W. Zhao, Z. Liu and D. Wan, J. Mater. Chem., 2012, 22, 11257
DOI: 10.1039/C2JM30624G

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