Synthesis of lithium garnet oxides of the compositions series Li7-xLa3Zr2-xTaxO12

Zhian Wang; Jun Mo; Yuping Wu; Hongqi Ye; Xiongwei Wu

doi:10.1007/s11595-017-1739-y

Synthesis of lithium garnet oxides of the compositions series Li_7-xLa₃Zr_2-xTa_xO₁₂

Zhian Wang, Jun Mo, Yuping Wu, Hongqi Ye, Xiongwei Wu

School of energy science and engineering

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

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 Li_7-xLa₃Zr_2-xTa_xO₁₂ (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.

Original language	English
Pages (from-to)	1261-1264
Number of pages	4
Journal	Journal Wuhan University of Technology, Materials Science Edition
Volume	32
Issue number	6
DOIs	https://doi.org/10.1007/s11595-017-1739-y
State	Published - 1 Dec 2017

Keywords

Ta substitution
cubic garnet
ionic conductivity
solid electrolytes

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10.1007/s11595-017-1739-y

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title = "Synthesis of lithium garnet oxides of the compositions series Li7-xLa3Zr2-xTaxO12 ",

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-xTaxO12 (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{\textquoteright}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.",

keywords = "Ta substitution, cubic garnet, ionic conductivity, solid electrolytes",

author = "Zhian Wang and Jun Mo and Yuping Wu and Hongqi Ye and Xiongwei Wu",

note = "Publisher Copyright: {\textcopyright} 2017, Wuhan University of Technology and Springer-Verlag GmbH Germany, part of Springer Nature.",

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doi = "10.1007/s11595-017-1739-y",

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T1 - Synthesis of lithium garnet oxides of the compositions series Li7-xLa3Zr2-xTaxO12

AU - Wang, Zhian

AU - Mo, Jun

AU - Wu, Yuping

AU - Ye, Hongqi

AU - Wu, Xiongwei

PY - 2017/12/1

Y1 - 2017/12/1

N2 - 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-xTaxO12 (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.

AB - 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-xTaxO12 (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.

KW - Ta substitution

KW - cubic garnet

KW - ionic conductivity

KW - solid electrolytes

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U2 - 10.1007/s11595-017-1739-y

DO - 10.1007/s11595-017-1739-y

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JO - Journal Wuhan University of Technology, Materials Science Edition

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IS - 6

ER -

Synthesis of lithium garnet oxides of the compositions series Li_7-xLa₃Zr_2-xTa_xO₁₂

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Keywords

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