Solid State Ionics, volume 296, pages 18-25

Electrochemical characterization of Li10SnP2S12: An electrolyte or a negative electrode for solid state Li-ion batteries?

Ilyas Tarhouchi 1, 2
Virginie Viallet 1, 2
Philippe Vinatier 2
M. Menetrier 2
1
 
Laboratoire de Réactivité et de Chimie des Solides, Université de Picardie Jules Verne, CNRS UMR#7314, F-80039 Amiens, France
2
 
RS2E, Réseau Français sur le Stockage Electrochimique de l'Energie, CNRS FR#3459, F-80039 Amiens, France
Publication typeJournal Article
Publication date2016-11-01
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor3.2
ISSN01672738
General Chemistry
Condensed Matter Physics
General Materials Science
Abstract
Li10SnP2S12, the tin analogue of the Li10GeP2S12 superionic conductor is characterized. Rietveld refinement of capillary powder XRD confirms that the material provided by NEI Corp. is mainly composed of Li10SnP2S12 with LGPS structure, with some Li2SnS3 impurity. Very strong reactivity at low voltage and vs. Li metal is shown by impedance measurements using Au and Li electrodes, as well as 3-electrode cyclic voltammetry. Galvanostatic measurements in half-cells with liquid and solid electrolytes confirm that Li10SnP2S12 reacts with respectively 16 and 8 lithium per mole of tin below 0.5 V vs. Li+/Li, most probably following a conversion/alloying reaction. Making use of this reactivity, we tested the concept of a LiCoO2/Li10SnP2S12 cell, were the electrolyte also acts as negative electrode at the contact with the negative current collector. 0.5 Li can be deintercalated from such cells, with very poor reversibility as probably hampered by the conversion/alloying reaction in the solid state, at least with a non-optimized electrode formulation. Although the voltage slowly but strongly relaxes when opening the circuit suggesting propagation of the reaction from the negative electrode to the electrolyte, it does not seem to reach the positive since no short-circuit was observed.

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Tarhouchi I. et al. Electrochemical characterization of Li10SnP2S12: An electrolyte or a negative electrode for solid state Li-ion batteries? // Solid State Ionics. 2016. Vol. 296. pp. 18-25.
GOST all authors (up to 50) Copy
Tarhouchi I., Viallet V., Vinatier P., Menetrier M. Electrochemical characterization of Li10SnP2S12: An electrolyte or a negative electrode for solid state Li-ion batteries? // Solid State Ionics. 2016. Vol. 296. pp. 18-25.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/j.ssi.2016.08.016
UR - https://doi.org/10.1016/j.ssi.2016.08.016
TI - Electrochemical characterization of Li10SnP2S12: An electrolyte or a negative electrode for solid state Li-ion batteries?
T2 - Solid State Ionics
AU - Tarhouchi, Ilyas
AU - Viallet, Virginie
AU - Vinatier, Philippe
AU - Menetrier, M.
PY - 2016
DA - 2016/11/01 00:00:00
PB - Elsevier
SP - 18-25
VL - 296
SN - 0167-2738
ER -
BibTex
Cite this
BibTex Copy
@article{2016_Tarhouchi,
author = {Ilyas Tarhouchi and Virginie Viallet and Philippe Vinatier and M. Menetrier},
title = {Electrochemical characterization of Li10SnP2S12: An electrolyte or a negative electrode for solid state Li-ion batteries?},
journal = {Solid State Ionics},
year = {2016},
volume = {296},
publisher = {Elsevier},
month = {nov},
url = {https://doi.org/10.1016/j.ssi.2016.08.016},
pages = {18--25},
doi = {10.1016/j.ssi.2016.08.016}
}
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