Chemistry of Materials, volume 25, issue 9, pages 1607-1614

Lithium Atom and A-Site Vacancy Distributions in Lanthanum Lithium Titanate

Xiang Gao 1
Craig A. J. Fisher 1
Teiichi Kimura 1
Yumi H. Ikuhara 1
Hiroki Moriwake 1
Akihide Kuwabara 1
Hideki Oki 2, 3
Takeshi Tojigamori 2
Rong Huang 4
Yuichi Ikuhara 1, 5
1
 
Nanostructures Research Laboratory, Japan Fine Ceramics Center, Nagoya 456-8587, Japan
2
 
Battery Materials Division, Toyota Motor Corporation, Shizuoka 410-1193, Japan
5
 
Institute of Engineering Innovation, The University of Tokyo, Tokyo 113-8586, Japan
Publication typeJournal Article
Publication date2013-04-25
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor8.6
ISSN08974756, 15205002
Materials Chemistry
General Chemistry
General Chemical Engineering
Abstract
Lanthanum lithium titanate (LLTO) is one of the most promising electrolyte materials for all-solid-state lithium-ion batteries. Despite numerous studies, the detailed crystal structure is still open to conjecture because of the difficulty of identifying precisely the positions of Li atoms and the distribution of intrinsic cation vacancies. Here we use subangstrom resolution scanning transmission electron microscopy (STEM) imaging methods and spatially resolved electron energy loss spectroscopy (EELS) analysis to examine the local atomic structure of LLTO. Direct annular bright-field (ABF) observations show Li locations on O4 window positions in Li-poor phase La0.62Li0.16TiO3 and near to A-site positions in Li-rich phase La0.56Li0.33TiO3. Local clustering of A-site vacancies results in aggregation of Li atoms, enhanced octahedral tilting and distortion, formation of O vacancies, and partial Ti4+ reduction. The results suggest local LLTO structures depend on a balance between the distribution of A-site vaca...

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Gao X. et al. Lithium Atom and A-Site Vacancy Distributions in Lanthanum Lithium Titanate // Chemistry of Materials. 2013. Vol. 25. No. 9. pp. 1607-1614.
GOST all authors (up to 50) Copy
Gao X., Fisher C. A. J., Kimura T., Ikuhara Y. H., Moriwake H., Kuwabara A., Oki H., Tojigamori T., Huang R., Ikuhara Y. Lithium Atom and A-Site Vacancy Distributions in Lanthanum Lithium Titanate // Chemistry of Materials. 2013. Vol. 25. No. 9. pp. 1607-1614.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1021/cm3041357
UR - https://doi.org/10.1021/cm3041357
TI - Lithium Atom and A-Site Vacancy Distributions in Lanthanum Lithium Titanate
T2 - Chemistry of Materials
AU - Fisher, Craig A. J.
AU - Kimura, Teiichi
AU - Ikuhara, Yumi H.
AU - Moriwake, Hiroki
AU - Kuwabara, Akihide
AU - Oki, Hideki
AU - Tojigamori, Takeshi
AU - Ikuhara, Yuichi
AU - Gao, Xiang
AU - Huang, Rong
PY - 2013
DA - 2013/04/25 00:00:00
PB - American Chemical Society (ACS)
SP - 1607-1614
IS - 9
VL - 25
SN - 0897-4756
SN - 1520-5002
ER -
BibTex |
Cite this
BibTex Copy
@article{2013_Gao,
author = {Craig A. J. Fisher and Teiichi Kimura and Yumi H. Ikuhara and Hiroki Moriwake and Akihide Kuwabara and Hideki Oki and Takeshi Tojigamori and Yuichi Ikuhara and Xiang Gao and Rong Huang},
title = {Lithium Atom and A-Site Vacancy Distributions in Lanthanum Lithium Titanate},
journal = {Chemistry of Materials},
year = {2013},
volume = {25},
publisher = {American Chemical Society (ACS)},
month = {apr},
url = {https://doi.org/10.1021/cm3041357},
number = {9},
pages = {1607--1614},
doi = {10.1021/cm3041357}
}
MLA
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MLA Copy
Gao, Xiang, et al. “Lithium Atom and A-Site Vacancy Distributions in Lanthanum Lithium Titanate.” Chemistry of Materials, vol. 25, no. 9, Apr. 2013, pp. 1607-1614. https://doi.org/10.1021/cm3041357.
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