Journal of the European Ceramic Society, volume 38, issue 4, pages 1673-1678
Improving the Li-ion conductivity and air stability of cubic Li7La3Zr2O12 by the co-doping of Nb, Y on the Zr site
Jianli Gai
1
,
Erqing Zhao
2
,
Furui Ma
1
,
Deye Sun
1
,
Xiaodi Ma
1
,
Yongcheng Jin
1
,
Qingliu Wu
3
,
Yongjie Cui
4
1
Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese of Academy of Sciences, 189 Songling Road, Qindao, 266101, China
|
Publication type: Journal Article
Publication date: 2018-04-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 5.7
ISSN: 09552219, 1873619X
Materials Chemistry
Ceramics and Composites
Abstract
The elements Nb and Y were simultaneously substituted to the Zr sites of an Li7La3Zr2O12 (LLZO) electrolyte to improve its Li-ion conductivity and air stability. Samples of Li7La3Zr2-2xNbxYxO12 were fabricated using a solid-state reaction method. The results show that the introduction of Nb and Y can stabilise cubic-phase LLZO. The total conductivity of Li7La3ZrNb0.5Y0.5O12 electrolyte can reach 8.29 × 10−4 S cm−1 at 30 °C when sintered at 1230 °C for only 15 h. Surprisingly, the conductivity of Li7La3ZrNb0.5Y0.5O12 can be maintained at 6.91 × 10−4 S cm−1 after exposure to air for 1.5 months, indicating excellent air stability. Furthermore, a LiFePO4/Li7La3ZrNb0.5Y0.5O12/Li cell displayed stable charge/discharge and cycling performance at ambient temperature, suggesting there is potential to use Li7La3ZrNb0.5Y0.5O12 electrolyte in Li-ion batteries. Additionally, the effects of varying the co-doping amount and dwelling time on the Li-ion conductivity of Li7La3Zr2-2xNbxYxO12 were investigated.
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Gai J. et al. Improving the Li-ion conductivity and air stability of cubic Li7La3Zr2O12 by the co-doping of Nb, Y on the Zr site // Journal of the European Ceramic Society. 2018. Vol. 38. No. 4. pp. 1673-1678.
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Gai J., Zhao E., Ma F., Sun D., Ma X., Jin Y., Wu Q., Cui Y. Improving the Li-ion conductivity and air stability of cubic Li7La3Zr2O12 by the co-doping of Nb, Y on the Zr site // Journal of the European Ceramic Society. 2018. Vol. 38. No. 4. pp. 1673-1678.
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TY - JOUR
DO - 10.1016/j.jeurceramsoc.2017.12.002
UR - https://doi.org/10.1016/j.jeurceramsoc.2017.12.002
TI - Improving the Li-ion conductivity and air stability of cubic Li7La3Zr2O12 by the co-doping of Nb, Y on the Zr site
T2 - Journal of the European Ceramic Society
AU - Gai, Jianli
AU - Zhao, Erqing
AU - Ma, Furui
AU - Sun, Deye
AU - Ma, Xiaodi
AU - Jin, Yongcheng
AU - Wu, Qingliu
AU - Cui, Yongjie
PY - 2018
DA - 2018/04/01 00:00:00
PB - Elsevier
SP - 1673-1678
IS - 4
VL - 38
SN - 0955-2219
SN - 1873-619X
ER -
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@article{2018_Gai,
author = {Jianli Gai and Erqing Zhao and Furui Ma and Deye Sun and Xiaodi Ma and Yongcheng Jin and Qingliu Wu and Yongjie Cui},
title = {Improving the Li-ion conductivity and air stability of cubic Li7La3Zr2O12 by the co-doping of Nb, Y on the Zr site},
journal = {Journal of the European Ceramic Society},
year = {2018},
volume = {38},
publisher = {Elsevier},
month = {apr},
url = {https://doi.org/10.1016/j.jeurceramsoc.2017.12.002},
number = {4},
pages = {1673--1678},
doi = {10.1016/j.jeurceramsoc.2017.12.002}
}
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Gai, Jianli, et al. “Improving the Li-ion conductivity and air stability of cubic Li7La3Zr2O12 by the co-doping of Nb, Y on the Zr site.” Journal of the European Ceramic Society, vol. 38, no. 4, Apr. 2018, pp. 1673-1678. https://doi.org/10.1016/j.jeurceramsoc.2017.12.002.