Solid State Ionics, volume 311, pages 69-74

Sintering behavior and electrochemical properties of garnet-like lithium conductor Li6.25M0.25La3Zr2O12 (M: Al3+ and Ga3+)

Yasuaki Matsuda
Asami Sakaida
Kaoru Sugimoto
Daisuke Mori
Yasuo TAKEDA
Osamu Yamamoto
Nobuyuki Imanishi
Publication typeJournal Article
Publication date2017-11-01
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor3.2
ISSN01672738
General Chemistry
Condensed Matter Physics
General Materials Science
Abstract
The sintering behavior and electrochemical properties of garnet-like Li 6.25 M 0.25 La 3 Zr 2 O 12 (M: Al 3 + and Ga 3 + ) were investigated. The sintering of Li 6.25 Al 0.25 La 3 Zr 2 O 12 progressed at 1050 °C. On the other hand, the densification of Li 6.25 Ga 0.25 La 3 Zr 2 O 12 pellets progressed at lower temperatures above 950 °C to yield relative densities of 93.9% after sintering at 1000 °C. The temperatures at which the sintering of Li 6.25 M 0.25 La 3 Zr 2 O 12 progressed are in good agreement with the temperatures where the liquid phases of Li-M-O compounds form. The sintering of these compounds was consistent with the change in the lattice parameter due to the replacement of Li + for Al 3 + /Ga 3 + in the structure. These results suggest that the cation diffusion between the grains and the grain boundaries due to the replacement of Li + for Al 3 + /Ga 3 + in the garnet-like structure improves the grain growth of these compounds. Dense pellets of Li 6.25 Ga 0.25 La 3 Zr 2 O 12 were obtained by sintering at 1000 °C for 12 h without the use of mother powders, and the bulk and total conductivities obtained at 25 °C were 1.6 × 10 − 3 and 9.6 × 10 − 4  S cm − 1 , respectively. The activation energies for the bulk and total conductivities were 0.25 and 0.32 eV, respectively. Li 6.25 Ga 0.25 La 3 Zr 2 O 12 was stable in contact with lithium metal, even for a long period of 1 month.

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Matsuda Y. et al. Sintering behavior and electrochemical properties of garnet-like lithium conductor Li6.25M0.25La3Zr2O12 (M: Al3+ and Ga3+) // Solid State Ionics. 2017. Vol. 311. pp. 69-74.
GOST all authors (up to 50) Copy
Matsuda Y., Sakaida A., Sugimoto K., Mori D., TAKEDA Y., Yamamoto O., Imanishi N. Sintering behavior and electrochemical properties of garnet-like lithium conductor Li6.25M0.25La3Zr2O12 (M: Al3+ and Ga3+) // Solid State Ionics. 2017. Vol. 311. pp. 69-74.
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RIS Copy
TY - JOUR
DO - 10.1016/j.ssi.2017.09.014
UR - https://doi.org/10.1016/j.ssi.2017.09.014
TI - Sintering behavior and electrochemical properties of garnet-like lithium conductor Li6.25M0.25La3Zr2O12 (M: Al3+ and Ga3+)
T2 - Solid State Ionics
AU - Matsuda, Yasuaki
AU - Sakaida, Asami
AU - Sugimoto, Kaoru
AU - Mori, Daisuke
AU - TAKEDA, Yasuo
AU - Yamamoto, Osamu
AU - Imanishi, Nobuyuki
PY - 2017
DA - 2017/11/01 00:00:00
PB - Elsevier
SP - 69-74
VL - 311
SN - 0167-2738
ER -
BibTex
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BibTex Copy
@article{2017_Matsuda,
author = {Yasuaki Matsuda and Asami Sakaida and Kaoru Sugimoto and Daisuke Mori and Yasuo TAKEDA and Osamu Yamamoto and Nobuyuki Imanishi},
title = {Sintering behavior and electrochemical properties of garnet-like lithium conductor Li6.25M0.25La3Zr2O12 (M: Al3+ and Ga3+)},
journal = {Solid State Ionics},
year = {2017},
volume = {311},
publisher = {Elsevier},
month = {nov},
url = {https://doi.org/10.1016/j.ssi.2017.09.014},
pages = {69--74},
doi = {10.1016/j.ssi.2017.09.014}
}
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