‘Isofacet’ anatase TiO2 microcages : topotactic synthesis and ultrastable Li-ion storage
Abstract
A new type of anatase TiO2 microcages assembled by oriented nanocrystals have been successfully fabricated through a topotactical conversion from CaTiO3 microcage precursor. The anatase microcages have all their six side faces dominated by anatase {001} facets, as revealed by detailed electron microscopy characterization. When used as the anode material for Li-ion storage, the unique microcages have the advantage of remarkable structural stability, high surface areas, and facile electronic conduction path. As a result, the TiO2 microcages-based anode achieves a high lithium storage performance especially at high current rates and long cycling stability, giving 175 mAh g-1 at 5C (850 mA g-1) after 800 cycles and 95 mAh g-1 at 50 C after 5000 cycles. Our comparison to the literature shows that this is a competitive and promising material for Li-ion battery and potentially also photocatalyst applications.
Citation
Wu , Q , Yang , X , Zhou , W , Gao , Q , Lu , F , Zhuang , J , Xu , X , Wu , M & Fan , H J 2015 , ' ‘Isofacet’ anatase TiO 2 microcages : topotactic synthesis and ultrastable Li-ion storage ' , Advanced Materials Interfaces , vol. 2 , no. 14 , 1500210 . https://doi.org/10.1002/admi.201500210
Publication
Advanced Materials Interfaces
Status
Peer reviewed
ISSN
2196-7350Type
Journal article
Rights
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is the peer reviewed version of the following article: Wu, Q., Yang, X., Zhou, W., Gao, Q., Lu, F., Zhuang, J., Xu, X., Wu, M. and Fan, H. J. (2015), “Isofacet” Anatase TiO2 Microcages: Topotactic Synthesis and Ultrastable Li-Ion Storage. Advanced Materials Interfaces, which has been published in final form at http://dx.doi.org/10.1002/admi.201500210. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Description
This work was financially supported by National Natural Science Foundation (NSF) of China and the Government of Guangdong Province for NSF (U1301242, 21271190 and S2012020011113), the Specialized Research Fund for the Doctoral Program of Higher Education (20130171130001) and industry (2012B09000026), and the State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University (2012-01). Qili Wu and Xianfeng Yang contributed equally to this work.Collections
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