Solid State Ionics, volume 286, pages 24-33

Interphase formation and degradation of charge transfer kinetics between a lithium metal anode and highly crystalline Li7P3S11 solid electrolyte

Sebastian Wenzel 1
Dominik A Weber 1
Thomas Leichtweiß 1
Martin R Busche 1
Joachim Sann 1
Jürgen Janek 1
Publication typeJournal Article
Publication date2016-03-01
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor3.2
ISSN01672738
General Chemistry
Condensed Matter Physics
General Materials Science
Abstract
The properties of the interface between solid electrolytes and electrode materials are of vital importance for the performance of all solid-state batteries (ASSB). Unwanted reactions between alkali metal electrodes and the solid electrolyte can lead to the formation of compounds that either facilitate or block the ion transfer kinetics. In particular for lithium solid electrolytes in the Li2S–P2S5 system with very high lithium ion conductivity only little is known about interfacial reactions with lithium metal. Here we monitor the formation of an interphase between Li7P3S11 and lithium metal by a combined analytical approach, comprising in situ photoelectron spectroscopy and time-dependent electrochemical impedance spectroscopy. Utilizing a self-developed XPS peak fit model for Li7P3S11, we identify the components of this interphase, discuss its properties and develop a qualitative model, which shows that the reaction between electrolyte and lithium metal, and hence, the interphase growth, is limited to a few nm. The solid electrolyte being used is a highly crystalline form of the superionic conductor Li7P3S11 without any residual glassy phase, and the synthesis of this Li7P3S11 phase is also reported.

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Wenzel S. et al. Interphase formation and degradation of charge transfer kinetics between a lithium metal anode and highly crystalline Li7P3S11 solid electrolyte // Solid State Ionics. 2016. Vol. 286. pp. 24-33.
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Wenzel S., Weber D. A., Leichtweiß T., Busche M. R., Sann J., Janek J. Interphase formation and degradation of charge transfer kinetics between a lithium metal anode and highly crystalline Li7P3S11 solid electrolyte // Solid State Ionics. 2016. Vol. 286. pp. 24-33.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/j.ssi.2015.11.034
UR - https://doi.org/10.1016/j.ssi.2015.11.034
TI - Interphase formation and degradation of charge transfer kinetics between a lithium metal anode and highly crystalline Li7P3S11 solid electrolyte
T2 - Solid State Ionics
AU - Wenzel, Sebastian
AU - Weber, Dominik A
AU - Leichtweiß, Thomas
AU - Busche, Martin R
AU - Sann, Joachim
AU - Janek, Jürgen
PY - 2016
DA - 2016/03/01 00:00:00
PB - Elsevier
SP - 24-33
VL - 286
SN - 0167-2738
ER -
BibTex
Cite this
BibTex Copy
@article{2016_Wenzel,
author = {Sebastian Wenzel and Dominik A Weber and Thomas Leichtweiß and Martin R Busche and Joachim Sann and Jürgen Janek},
title = {Interphase formation and degradation of charge transfer kinetics between a lithium metal anode and highly crystalline Li7P3S11 solid electrolyte},
journal = {Solid State Ionics},
year = {2016},
volume = {286},
publisher = {Elsevier},
month = {mar},
url = {https://doi.org/10.1016/j.ssi.2015.11.034},
pages = {24--33},
doi = {10.1016/j.ssi.2015.11.034}
}
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