Enhancement of ionic conductivity by addition of LiAlO2 in Li6.6La3Zr1.6Sb0.4O12 for lithium ion battery

Li6.6La3Zr1.6Sb0.4O12 has been synthesized by solid state reaction and effect of addition of LiAlO2 on density, structure and ionic conductivity has been studied. XRD pattern is studied for phase confirmation. Density has been calculated and SEM analysis has been done for morphological studies and e...

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Bibliographic Details
Published in:Solid state ionics 2020-02, Vol.345, p.115185, Article 115185
Main Authors: Wakudkar, Pritee, Deshpande, A.V.
Format: Article
Language:English
Subjects:
Batteries
Chemical synthesis
Conductivity
Density
Electrolytes
Heat conductivity
Ion currents
Ionic conductivity
Li7La3Zr2O12
Lithium
Lithium-ion batteries
Modulus studies
Rechargeable batteries
Sintering additives
Solid electrolytes
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Summary:Li6.6La3Zr1.6Sb0.4O12 has been synthesized by solid state reaction and effect of addition of LiAlO2 on density, structure and ionic conductivity has been studied. XRD pattern is studied for phase confirmation. Density has been calculated and SEM analysis has been done for morphological studies and elemental distribution in the sample. Complex impedance analysis was used to measure ionic conductivity of all samples and transport number measurement has been carried. Highest conductivity of 3.16 × 10−4 Scm−1 at 25°C is observed for 1 wt% LiAlO2 added Li6.6La3Zr1.6Sb0.4O12 ceramic sintered at 1050 °C for 8 h. •Li6.6La3Zr1.6Sb0.4O12 was prepared by solid state sintering method with wt% addition of LiAlO2 as sintering aid.•Cubic garnet structure of LLZO was confirmed from XRD and distribution of Al was detected by elemental mapping.•With addition of LiAlO2, the sintering temperature and duration reduced and the conductivity enhanced.•Maximum ionic conductivity of 3.16x10-4 Scm-1at 25°C was observed for 1 wt% addition of LiAlO2.
ISSN:0167-2738
1872-7689
DOI:10.1016/j.ssi.2019.115185