Solid State Ionics, volume 268, pages 300-304

The unusual role of Li6PS5Br in all-solid-state CuS/Li6PS5Br/In–Li batteries

Publication typeJournal Article
Publication date2014-12-01
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor3.2
ISSN01672738
General Chemistry
Condensed Matter Physics
General Materials Science
Abstract
Fast ion conducting lithium argyrodites Li 6 PS 5 X (X = Cl, Br) are promising solid electrolytes for rechargeable all-solid-state lithium batteries. Here we realized all-solid-state lithium batteries combining Li 6 PS 5 Br with CuS as the cathode. An initial discharge capacity of 650 mAh/g was achieved, though the reversible capacity after 20 cycles was limited to be 90 mAh/g. Based on X-ray diffraction measurements at different discharge stages we identified a peculiar reaction mechanism of CuS in this all-solid-state battery design, as the Li 6 PS 5 Br electrolyte is found to reversibly participate in the cell reaction: at intermediate stages of the discharge Cu + is incorporated in the argyrodite leading to Cu y Li 6 − y PS 5 Br. The reduced ionic conductivity of Cu y Li 6 − y PS 5 Br and the volume change of the electrolyte during cycling affect the cyclic performance of the batteries in addition to the volume changes of the active materials. From the first cycle onwards both processes result – as evidenced by SEM – in progressive crack formation, dissociation of the active material from Li 6 PS 5 Br and carbon and consequential capacity fading.

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Chen M., Prasada Rao R., Adams S. The unusual role of Li6PS5Br in all-solid-state CuS/Li6PS5Br/In–Li batteries // Solid State Ionics. 2014. Vol. 268. pp. 300-304.
GOST all authors (up to 50) Copy
Chen M., Prasada Rao R., Adams S. The unusual role of Li6PS5Br in all-solid-state CuS/Li6PS5Br/In–Li batteries // Solid State Ionics. 2014. Vol. 268. pp. 300-304.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/j.ssi.2014.05.004
UR - https://doi.org/10.1016/j.ssi.2014.05.004
TI - The unusual role of Li6PS5Br in all-solid-state CuS/Li6PS5Br/In–Li batteries
T2 - Solid State Ionics
AU - Chen, Mao-Hua
AU - Prasada Rao, Rayavarapu
AU - Adams, Stefan
PY - 2014
DA - 2014/12/01 00:00:00
PB - Elsevier
SP - 300-304
VL - 268
SN - 0167-2738
ER -
BibTex
Cite this
BibTex Copy
@article{2014_Chen,
author = {Mao-Hua Chen and Rayavarapu Prasada Rao and Stefan Adams},
title = {The unusual role of Li6PS5Br in all-solid-state CuS/Li6PS5Br/In–Li batteries},
journal = {Solid State Ionics},
year = {2014},
volume = {268},
publisher = {Elsevier},
month = {dec},
url = {https://doi.org/10.1016/j.ssi.2014.05.004},
pages = {300--304},
doi = {10.1016/j.ssi.2014.05.004}
}
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