Journal of Alloys and Compounds, volume 826, pages 154213
High conductive Al-free Y-doped Li7La3Zr2O12 prepared by spark plasma sintering
1
Department of Material and Environmental Engineering, Hakodate National College of Technology, 14-1, Tokura-cho, Hakodate Hokkaido, 042-8501, Japan
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Publication type: Journal Article
Publication date: 2020-06-01
Journal:
Journal of Alloys and Compounds
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 6.2
ISSN: 09258388
Materials Chemistry
Metals and Alloys
Mechanical Engineering
Mechanics of Materials
Abstract
Al-free Li 7.06 La 3 Zr 1.94 Y 0.06 O 12 (LLYZ) solid electrolyte is prepared by using the spark plasma sintering (SPS) technique. Sinterbility of LLYZ increases with sintering temperature. Well-sintered LLYZ pellet with high conductive cubic structure is obtained when SPS is performed at 1100 °C for 10 min. The relative density of the pellet is close to 100% and grains are not observed in the LLYZ pellet. By the high sinterbility, grain-boundary resistance can be ignored. The total conductivity of the LLYZ pellet is 9.8 × 10 −4 S cm −1 , which is higher than that of LLYZ pellet sintered the conventional method. Also, Li evaporation is suppressed by short sintering time of the SPS technique. Additionally, Al contamination, which may hinder Li ion conduction, can be avoided by using ZrO 2 crucible for prearation of precursor powder and graphite die for the SPS. Therefore, low grain-boudanry resistance, high Li content and absent from Al contamination are considered to be reasons for the high Li ionic conductivity of SPS-sintered LLYZ pellet. Additionally, the LLYZ is stable in a range of 0–9.0 V vs. Li/Li + . • Y-substitute Li 7 La 3 Zr 2 O 12 (LLYZ) was prepared by spark plasma sintering. • Completely sintered LLYZ pellet was obtained. • LLYZ showed high toial Li ion conductivity, 9.8 × 10 −4 S cm −1 . • Electrochemical window of LLYZ was 0–9.5 V vs. Li/Li + .
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- We do not take into account publications without a DOI.
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- Statistics recalculated weekly.
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Kotobuki M., Koishi M. High conductive Al-free Y-doped Li7La3Zr2O12 prepared by spark plasma sintering // Journal of Alloys and Compounds. 2020. Vol. 826. p. 154213.
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Kotobuki M., Koishi M. High conductive Al-free Y-doped Li7La3Zr2O12 prepared by spark plasma sintering // Journal of Alloys and Compounds. 2020. Vol. 826. p. 154213.
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TY - JOUR
DO - 10.1016/j.jallcom.2020.154213
UR - https://doi.org/10.1016/j.jallcom.2020.154213
TI - High conductive Al-free Y-doped Li7La3Zr2O12 prepared by spark plasma sintering
T2 - Journal of Alloys and Compounds
AU - Kotobuki, Masashi
AU - Koishi, Masaki
PY - 2020
DA - 2020/06/01 00:00:00
PB - Elsevier
SP - 154213
VL - 826
SN - 0925-8388
ER -
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@article{2020_Kotobuki,
author = {Masashi Kotobuki and Masaki Koishi},
title = {High conductive Al-free Y-doped Li7La3Zr2O12 prepared by spark plasma sintering},
journal = {Journal of Alloys and Compounds},
year = {2020},
volume = {826},
publisher = {Elsevier},
month = {jun},
url = {https://doi.org/10.1016/j.jallcom.2020.154213},
pages = {154213},
doi = {10.1016/j.jallcom.2020.154213}
}