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Title: Synthesis and characterization of substituted garnet and perovskite-based lithium-ion conducting solid electrolytes

Abstract

In this study, titanium, tantalum-substituted Li7La3Zr2-xAxO12 (LLZO, A = Ta, Ti) garnets, and chromium-substituted La(2/3)-xLi3xTi1-yCryO3 (LLTO) perovskites were prepared by a conventional solid-state reaction and the Pechini processes. The desired crystal phases were obtained by varying the calcination temperature and time, as well as the substitution concentration. All samples indicated decomposition of the precursors when heated above 750 °C and formation of the desired phase after heat treatment at higher temperatures. Neutron diffraction data shows the formation of a predominant cubic phase in the case of Ta-LLZO, and monoclinic phase with minor impurity phases for Cr-LLTO. Ionic conductivity for Ti-LLZO (Li7La3Zr1.4Ti0.6O12), Ta-LLZO (Li6.03La3Zr1.533Ta0.46O12), and Cr-LLTO (La(2/3)-xLi3xTi0.9Cr0.1O3) at room temperature were found to be 5.21 × 10–6, 1.01 ×10–6, and 1.2 × 10–4 S cm–1, respectively. The activation energies of the compounds were determined from the Arrhenius plot and were 0.44 eV (Ti0.6-LLZO), 0.54 eV (Ta0.5-LLZO), and 0.20 eV (Cr0.1-LLTO).

Authors:
 [1];  [2];  [2]; ;  [2];  [2];  [3];  [4]
+ Show Author Affiliations
  1. National Energy Technology Lab. (NETL), Albany, OR (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Hydro-Quebec, Montreal, QC (Canada)
  4. National Energy Technology Lab. (NETL), Albany, OR (United States); West Virginia Univ., Morgantown, WV (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1241462
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Ionics
Additional Journal Information:
Journal Volume: 22; Journal Issue: 3; Journal ID: ISSN 0947-7047
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; solid electrolytes; garnet; Perovskite; lithium-ion conduction; solid-state lithium-ion battery

Citation Formats

Abreu-Sepúlveda, Maria, Huq, Ashfia, Dhital, Chetan, Dominique E. Williams, Li, Yunchao, Paranthaman, M. Parans, Zaghib, Karim, and Manivannan, A. Synthesis and characterization of substituted garnet and perovskite-based lithium-ion conducting solid electrolytes. United States: N. p., 2015. Web. doi:10.1007/s11581-015-1556-2.
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Abreu-Sepúlveda, Maria, Huq, Ashfia, Dhital, Chetan, Dominique E. Williams, Li, Yunchao, Paranthaman, M. Parans, Zaghib, Karim, & Manivannan, A. Synthesis and characterization of substituted garnet and perovskite-based lithium-ion conducting solid electrolytes. United States. https://doi.org/10.1007/s11581-015-1556-2
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Abreu-Sepúlveda, Maria, Huq, Ashfia, Dhital, Chetan, Dominique E. Williams, Li, Yunchao, Paranthaman, M. Parans, Zaghib, Karim, and Manivannan, A. Wed . "Synthesis and characterization of substituted garnet and perovskite-based lithium-ion conducting solid electrolytes". United States. https://doi.org/10.1007/s11581-015-1556-2. https://www.osti.gov/servlets/purl/1241462.
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@article{osti_1241462,
title = {Synthesis and characterization of substituted garnet and perovskite-based lithium-ion conducting solid electrolytes},
author = {Abreu-Sepúlveda, Maria and Huq, Ashfia and Dhital, Chetan and Dominique E. Williams and Li, Yunchao and Paranthaman, M. Parans and Zaghib, Karim and Manivannan, A.},
abstractNote = {In this study, titanium, tantalum-substituted Li7La3Zr2-xAxO12 (LLZO, A = Ta, Ti) garnets, and chromium-substituted La(2/3)-xLi3xTi1-yCryO3 (LLTO) perovskites were prepared by a conventional solid-state reaction and the Pechini processes. The desired crystal phases were obtained by varying the calcination temperature and time, as well as the substitution concentration. All samples indicated decomposition of the precursors when heated above 750 °C and formation of the desired phase after heat treatment at higher temperatures. Neutron diffraction data shows the formation of a predominant cubic phase in the case of Ta-LLZO, and monoclinic phase with minor impurity phases for Cr-LLTO. Ionic conductivity for Ti-LLZO (Li7La3Zr1.4Ti0.6O12), Ta-LLZO (Li6.03La3Zr1.533Ta0.46O12), and Cr-LLTO (La(2/3)-xLi3xTi0.9Cr0.1O3) at room temperature were found to be 5.21 × 10–6, 1.01 ×10–6, and 1.2 × 10–4 S cm–1, respectively. The activation energies of the compounds were determined from the Arrhenius plot and were 0.44 eV (Ti0.6-LLZO), 0.54 eV (Ta0.5-LLZO), and 0.20 eV (Cr0.1-LLTO).},
doi = {10.1007/s11581-015-1556-2},
journal = {Ionics},
number = 3,
volume = 22,
place = {United States},
year = {Wed Sep 30 00:00:00 EDT 2015},
month = {Wed Sep 30 00:00:00 EDT 2015}
}
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https://doi.org/10.1007/s11581-015-1556-2
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