Lithium Storage in Li4Ti5O12 Spinel: The Full Static Picture from Electron Microscopy

The full static picture of Li storage in Li4Ti5O12 is derived using the latest spherical aberration‐corrected scanning transmission electron microscopy and first‐principles calculations. The accommodation of the additional Li+ is directly visualized and the distribution of electrons introduced by li...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2012-06, Vol.24 (24), p.3233-3238
Main Authors: Lu, Xia, Zhao, Liang, He, Xiaoqing, Xiao, Ruijuan, Gu, Lin, Hu, Yong-Sheng, Li, Hong, Wang, Zhaoxiang, Duan, Xiaofeng, Chen, Liquan, Maier, Joachim, Ikuhara, Yuichi
Format: Article
Language:English
Subjects:
Electric Power Supplies
Electrodes
interfaces
Lithium - chemistry
lithium-ion batteries
Microscopy, Electron, Scanning Transmission
Models, Molecular
Molecular Conformation
scanning transmission electron microscopy
Titanium - chemistry
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Summary:The full static picture of Li storage in Li4Ti5O12 is derived using the latest spherical aberration‐corrected scanning transmission electron microscopy and first‐principles calculations. The accommodation of the additional Li+ is directly visualized and the distribution of electrons introduced by lithium insertion deduced. Moreover, Li4Ti5O12 is found to transform into Li7Ti5O12 on lithiation by developing a dislocation‐free coherent hetero‐interface.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201200450