ACS Applied Energy Materials, volume 4, issue 7, pages 7309-7315

On the Lithium Distribution in Halide Superionic Argyrodites by Halide Incorporation in Li7–xPS6–xClx

Publication typeJournal Article
Publication date2021-07-07
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor6.4
ISSN25740962, 25740962
Materials Chemistry
Electrochemistry
Electrical and Electronic Engineering
Energy Engineering and Power Technology
Chemical Engineering (miscellaneous)
Abstract
Superionic lithium argyrodites are attractive as solid electrolytes for all-solid-state-batteries. These materials of composition Li6PS5X (X = Cl, Br, and I) exhibit structural disorder between the X−/S2− positions, with higher disorder realizing better Li+ transport. Further replacement of the sulfide by chloride anions (for the series Li7−xPS6−xClx) has been shown to increase the ionic conductivity. However, the underlying changes to the lithium substructure are still relatively unknown. Here we explore a larger range of nominal halide compositions in this material from x = 0.25 to x = 1.5 and explore the changes with neutron diffraction and impedance spectroscopy. The replacement of S2− by Cl−causes a lowered average charge in the center of the prevalent Li+ “cages”, which in turn causes weaker interactions with Li+ ions. Analysis of neutron diffraction data reveals that the increased Cl− content causes these clustered Li+ “cages” to become more interconnected, thereby increasing Li+ conductivity through the structure. This study explores the understanding of the fundamental structure–transport correlations in the argyrodites, specifically structural changes withinthe Li+ ion substructure upon changing anionic charge distribution.

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Gautam A. et al. On the Lithium Distribution in Halide Superionic Argyrodites by Halide Incorporation in Li7–xPS6–xClx // ACS Applied Energy Materials. 2021. Vol. 4. No. 7. pp. 7309-7315.
GOST all authors (up to 50) Copy
Gautam A., Ghidiu M., Suard E., Kraft M. A., Zeier W. G. On the Lithium Distribution in Halide Superionic Argyrodites by Halide Incorporation in Li7–xPS6–xClx // ACS Applied Energy Materials. 2021. Vol. 4. No. 7. pp. 7309-7315.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1021/acsaem.1c01417
UR - https://doi.org/10.1021/acsaem.1c01417
TI - On the Lithium Distribution in Halide Superionic Argyrodites by Halide Incorporation in Li7–xPS6–xClx
T2 - ACS Applied Energy Materials
AU - Gautam, Ajay
AU - Kraft, Marvin A
AU - Suard, E.
AU - Zeier, Wolfgang G.
AU - Ghidiu, Michael
PY - 2021
DA - 2021/07/07 00:00:00
PB - American Chemical Society (ACS)
SP - 7309-7315
IS - 7
VL - 4
SN - 2574-0962
SN - 2574-0962
ER -
BibTex |
Cite this
BibTex Copy
@article{2021_Gautam,
author = {Ajay Gautam and Marvin A Kraft and E. Suard and Wolfgang G. Zeier and Michael Ghidiu},
title = {On the Lithium Distribution in Halide Superionic Argyrodites by Halide Incorporation in Li7–xPS6–xClx},
journal = {ACS Applied Energy Materials},
year = {2021},
volume = {4},
publisher = {American Chemical Society (ACS)},
month = {jul},
url = {https://doi.org/10.1021/acsaem.1c01417},
number = {7},
pages = {7309--7315},
doi = {10.1021/acsaem.1c01417}
}
MLA
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MLA Copy
Gautam, Ajay, et al. “On the Lithium Distribution in Halide Superionic Argyrodites by Halide Incorporation in Li7–xPS6–xClx.” ACS Applied Energy Materials, vol. 4, no. 7, Jul. 2021, pp. 7309-7315. https://doi.org/10.1021/acsaem.1c01417.
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