Solid State Ionics, volume 317, pages 122-126

Ionic conductivity and crystallization process in the Li2S–P2S5 glass electrolyte

Hirofumi Tsukasaki 1
Shigeo Mori 1
Shinya Shiotani 2
Hideyuki Yamamura 2
Publication typeJournal Article
Publication date2018-04-01
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor3.2
ISSN01672738
General Chemistry
Condensed Matter Physics
General Materials Science
Abstract
The ionic conductivity of the Li2S–P2S5 glass electrolyte systems strongly depends on the type of precipitated crystalline phases and heat-treatment conditions. To clarify the correlation between ionic conductivity and crystallization behavior, a specific observation technique to visualize the precipitated nanocrystallites via transmission electron microscopy (TEM), and a quantitative method for evaluating the crystallization degree are developed. The 75Li2S·25P2S5 glass exhibits a high conductivity of approximately 7.5 × 10−4 S/cm at a sintering temperature between 120 °C and 180 °C. Above 180 °C, however, conductivity sharply decreases to 1.8 × 10−4 S/cm. In situ TEM observation reveals that this is attributed to the crystallization of the glasses. The crystallization process is mainly characterized by the formation of β-Li3PS4 nanocrystallites precipitated above 180 °C whose size remains intact during further heating until 250 °C. As a result, to achieve high ionic conductivity in the 75Li2S·25P2S5 glass, it is important to realize an amorphous state with the presence of nanocrystallites that would yield a crystallinity degree lower than 5%.

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Tsukasaki H. et al. Ionic conductivity and crystallization process in the Li2S–P2S5 glass electrolyte // Solid State Ionics. 2018. Vol. 317. pp. 122-126.
GOST all authors (up to 50) Copy
Tsukasaki H., Mori S., Shiotani S., Yamamura H. Ionic conductivity and crystallization process in the Li2S–P2S5 glass electrolyte // Solid State Ionics. 2018. Vol. 317. pp. 122-126.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/j.ssi.2018.01.010
UR - https://doi.org/10.1016/j.ssi.2018.01.010
TI - Ionic conductivity and crystallization process in the Li2S–P2S5 glass electrolyte
T2 - Solid State Ionics
AU - Tsukasaki, Hirofumi
AU - Mori, Shigeo
AU - Shiotani, Shinya
AU - Yamamura, Hideyuki
PY - 2018
DA - 2018/04/01 00:00:00
PB - Elsevier
SP - 122-126
VL - 317
SN - 0167-2738
ER -
BibTex
Cite this
BibTex Copy
@article{2018_Tsukasaki,
author = {Hirofumi Tsukasaki and Shigeo Mori and Shinya Shiotani and Hideyuki Yamamura},
title = {Ionic conductivity and crystallization process in the Li2S–P2S5 glass electrolyte},
journal = {Solid State Ionics},
year = {2018},
volume = {317},
publisher = {Elsevier},
month = {apr},
url = {https://doi.org/10.1016/j.ssi.2018.01.010},
pages = {122--126},
doi = {10.1016/j.ssi.2018.01.010}
}
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