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Synthesis of lithium garnet oxides of the compositions series Li7-xLa3Zr2-xTa x O12

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Abstract

In order to obtain a safe, reliable, long-lived battery system without use of flammable, volatile, and relatively unstable organic liquid-based electrolytes, lithium garnet oxides with formulas Li7-xLa3Zr2-xTa x O12 (x=0.2-1) were synthesized by the solid state reaction method. Single cubic phases were observed in the composition x range between 0.2 and 1. The lattice parameters decreased with the addition of Ta due to the smaller ionic radius of Ta5+ compared with that of Zr4+, following the Vegard’s law. The total conductivity of the x = 0.3 composition is 6.03×10-5 S·cm-1 at room temperature with an activation energy of 0.30 eV. These lithium garnet oxides exhibit lithium ionic transport that is relevant to lithium battery application.

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Authors and Affiliations

  1. Department of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China

    Zhian Wang  (王治安), Hongqi Ye  (叶红齐) & Xiongwei Wu

  2. College of Science, National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanica, College of Agronomy, Hunan Agricultural University, Changsha, 410128, China

    Jun Mo & Xiongwei Wu

  3. New Energy and Materials Laboratory (NEML), Department of Chemistry & Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China

    Yuping Wu

  4. College of Energy, Nanjing University of Technology, Nanjing, 211800, China

    Yuping Wu

Authors
  1. Zhian Wang  (王治安)
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  2. Jun Mo
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  3. Yuping Wu
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  4. Hongqi Ye  (叶红齐)
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  5. Xiongwei Wu
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Corresponding author

Correspondence to Hongqi Ye  (叶红齐).

Additional information

Funded by the National Natural Science Foundation of China (No.21276284), the Hunan Provincial Natural Science Foundation of China (2015JJ3074), the Science and Technology Project of Changsha (KL403147-11) and the Postdoctoral Fund of Hunan Agricultural University(129263)

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Wang, Z., Mo, J., Wu, Y. et al. Synthesis of lithium garnet oxides of the compositions series Li7-xLa3Zr2-xTa x O12. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 32, 1261–1264 (2017). https://doi.org/10.1007/s11595-017-1739-y

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  • DOI: https://doi.org/10.1007/s11595-017-1739-y

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