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Synthesis and ionic conductivity of Li6La3BiSnO12 with cubic garnet-type structure via solid-state reaction

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Abstract

The synthesis and transport properties of the Li6La3BiSnO12 solid electrolyte by a solid-state reaction were reported. The condition to synthesize the Li6La3BiSnO12 is 785 °C for 36 h in air. The refined lattice constant of Li6La3BiSnO12 is 13.007 Å. Qualitative phase analysis by X-ray powder diffraction patterns combined with the Rietveld method reveals garnet type compounds as major phases. The Li-ion conductivity of the prepared Li6La3BiSnO12 is 0.85×10–4 S/cm at 22 °C, which is comparable with that of the Li5La3Bi2O12. The Li6La3BiSnO12 compounds are chemically stable against LiCoO2 which is widely used as cathode material up to 700 °C but not against the LiMn2O4 if the temperature is higher than 550 °C. The Li6La3BiSnO12 exhibits higher chemical stability than Li5La3Bi2O12, which is due to Sn substitution for Bi.

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Authors and Affiliations

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

    Hong-jian Peng  (彭红建), Li-hong Xiao  (肖理红), Yuan-ni Cao  (曹远尼) & Xiang-feng Luan  (栾向峰)

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  1. Hong-jian Peng  (彭红建)
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  2. Li-hong Xiao  (肖理红)
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  3. Yuan-ni Cao  (曹远尼)
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  4. Xiang-feng Luan  (栾向峰)
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Correspondence to Hong-jian Peng  (彭红建).

Additional information

Foundation item: Project(51372278) supported by the National Natural Science Foundation of China; Project(2010RS4015) supported by the Natural Science Foundation of Hunan Province, China; Project(2014ejing004) supported by the Hunan Intellectual Property Bureau, China; Project(CSUZC2014020) supported by the Open-End Fund for the Valuable and Precision Instruments of Central South University, China

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Peng, Hj., Xiao, Lh., Cao, Yn. et al. Synthesis and ionic conductivity of Li6La3BiSnO12 with cubic garnet-type structure via solid-state reaction. J. Cent. South Univ. 22, 2883–2886 (2015). https://doi.org/10.1007/s11771-015-2821-2

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  • DOI: https://doi.org/10.1007/s11771-015-2821-2

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