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

Authors

  • Xia Lu,

    1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. of China
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  • Liang Zhao,

    1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. of China
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  • Xiaoqing He,

    1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. of China
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  • Ruijuan Xiao,

    1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. of China
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  • Lin Gu,

    Corresponding author
    1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. of China
    2. WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
    3. Nanostructures Research Laboratory, Japan Fine Ceramic Centre, Nagoya 456-8587, Japan
    • Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. of China.
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  • Yong-Sheng Hu,

    Corresponding author
    1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. of China
    • Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. of China.
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  • Hong Li,

    1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. of China
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  • Zhaoxiang Wang,

    1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. of China
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  • Xiaofeng Duan,

    1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. of China
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  • Liquan Chen,

    1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. of China
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  • Joachim Maier,

    1. Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany
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  • Yuichi Ikuhara

    1. WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
    2. Nanostructures Research Laboratory, Japan Fine Ceramic Centre, Nagoya 456-8587, Japan
    3. Institute of Engineering Innovation, The University of Tokyo Tokyo 113-8654 Japan
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Abstract

original image

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.

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