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Issue 3, 2013
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New facile synthesis of TiO2 hollow sphere with an opening hole and its enhanced rate performance in lithium-ion batteries†

Shangjun Ding,a   Tianquan Lin,a   Yaoming Wang,a   Xujie Lüa  and  Fuqiang Huang*ab  
Author affiliations

* Corresponding authors

a CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P.R. China
E-mail: huangfq@mail.sic.ac.cn
Fax: +86-21-5241-6360
Tel: +86-21-5241-1620

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

Abstract

With the aid of the slow release of water from esterification reactions, a simple one-step solvothermal method was developed to prepare TiO2 hollow spheres with an opening hole. Organic carboxylic acids (CA) were exploited as not only the reactant to conduct esterification with ethanol, but also the coordination agent to modify titanium n-butoxide (TNB) to manipulate its hydroxylation and condensation process. The specific TiO2 morphologies prepared by this CA-assisted method significantly depend on the molecular structure and relative concentration of the carboxylic acids used. Appropriate carbon chain length of the CA molecule and the optimal molar ratio of CA/TNB are the essential factors to fabricate well-developed TiO2 hollow spheres with an opening hole. The surface hole facilitates active material transportation into the hollow interior, so this structure of TiO2 has been utilized in lithium-ion batteries and exhibits superiority in rate performance compared to closed spheres.

Graphical abstract: New facile synthesis of TiO2 hollow sphere with an opening hole and its enhanced rate performance in lithium-ion batteries

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Article information

https://doi.org/10.1039/C2NJ40956A
Submitted
20 Oct 2012
Accepted
03 Jan 2013
First published
07 Jan 2013
New J. Chem., 2013,37, 784-789
Article type
Paper
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New facile synthesis of TiO2 hollow sphere with an opening hole and its enhanced rate performance in lithium-ion batteries

S. Ding, T. Lin, Y. Wang, X. Lü and F. Huang, New J. Chem., 2013, 37, 784
DOI: 10.1039/C2NJ40956A

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