‘Isofacet’ anatase TiO2 microcages: topotactic synthesis and ultrastable Li-ion storage

Qili Wu; Xianfeng  Yang; Wuzong Zhou; Qiong  Gao; Fengqi Lu; Jianle  Zhuang; Xianfang Xu; Mingmei Wu; Hong Jin  Fan

doi:10.1002/admi.201500210

‘Isofacet’ anatase TiO₂ microcages: topotactic synthesis and ultrastable Li-ion storage

Qili Wu, Xianfeng Yang, Wuzong Zhou, Qiong Gao , Fengqi Lu, Jianle Zhuang , Xianfang Xu, Mingmei Wu, Hong Jin Fan

Research output: Contribution to journal › Article › peer-review

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^-1at 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.

Original language	English
Article number	1500210
Journal	Advanced Materials Interfaces
Volume	2
Issue number	14
Early online date	23 Jul 2015
DOIs	https://doi.org/10.1002/admi.201500210
Publication status	Published - 22 Sept 2015

Keywords

Isofacet
Lithium ion batteries
Microcages
Titanate
Topotactic synthesis

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1002/admi.201500210

Zhou_2015_EMI_Isofacet_AM
© 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.
Accepted author manuscript, 1.03 MB

Cite this

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title = "{\textquoteleft}Isofacet{\textquoteright} 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.",

keywords = "Isofacet, Lithium ion batteries, Microcages, Titanate, Topotactic synthesis",

author = "Qili Wu and Xianfeng Yang and Wuzong Zhou and Qiong Gao and Fengqi Lu and Jianle Zhuang and Xianfang Xu and Mingmei Wu and Fan, {Hong Jin}",

note = "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. ",

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doi = "10.1002/admi.201500210",

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TY - JOUR

T1 - ‘Isofacet’ anatase TiO2 microcages

T2 - topotactic synthesis and ultrastable Li-ion storage

AU - Wu, Qili

AU - Yang, Xianfeng

AU - Zhou, Wuzong

AU - Gao , Qiong

AU - Lu, Fengqi

AU - Zhuang , Jianle

AU - Xu, Xianfang

AU - Wu, Mingmei

AU - Fan , Hong Jin

N1 - 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.

PY - 2015/9/22

Y1 - 2015/9/22

N2 - 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.

AB - 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.

KW - Isofacet

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KW - Titanate

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