Open Access
Scientific Reports, volume 10, issue 1, publication number 4390
Poly(Ethylene Oxide)-based Electrolyte for Solid-State-Lithium-Batteries with High Voltage Positive Electrodes: Evaluating the Role of Electrolyte Oxidation in Rapid Cell Failure
Gerrit Homann
1
,
Lukas Stolz
1
,
Jijeesh Nair
1
,
Isidora Cekic Laskovic
1
,
Martin Winter
1, 2
,
Johannes Kasnatscheew
1
Publication type: Journal Article
Publication date: 2020-03-09
Journal:
Scientific Reports
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor: 4.6
ISSN: 20452322, 20452322
Multidisciplinary
Abstract
Polyethylene oxide (PEO)-based solid polymer electrolytes (SPEs) typically reveal a sudden failure in Li metal cells particularly with high energy density/voltage positive electrodes, e.g. LiNi0.6Mn0.2Co0.2O2 (NMC622), which is visible in an arbitrary, time – and voltage independent, “voltage noise” during charge. A relation with SPE oxidation was evaluated, for validity reasons on different active materials in potentiodynamic and galvanostatic experiments. The results indicate an exponential current increase and a potential plateau at 4.6 V vs. Li|Li+, respectively, demonstrating that the main oxidation onset of the SPE is above the used working potential of NMC622 being < 4.3 V vs. Li|Li+. Obviously, the SPE│NMC622 interface is unlikely to be the primary source of the observed sudden failure indicated by the “voltage noise”. Instead, our experiments indicate that the Li | SPE interface, and in particular, Li dendrite formation and penetration through the SPE membrane is the main source. This could be simply proven by increasing the SPE membrane thickness or by exchanging the Li metal negative electrode by graphite, which both revealed “voltage noise”-free operation. The effect of membrane thickness is also valid with LiFePO4 electrodes. In summary, it is the cell set-up (PEO thickness, negative electrode), which is crucial for the voltage-noise associated failure, and counterintuitively not a high potential of the positive electrode.
Top-30
Citations by journals
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4 publications, 2.15%
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3 publications, 1.61%
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2 publications, 1.08%
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2 publications, 1.08%
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2 publications, 1.08%
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2 publications, 1.08%
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2 publications, 1.08%
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2 publications, 1.08%
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2 publications, 1.08%
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2 publications, 1.08%
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2 publications, 1.08%
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Citations by publishers
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American Chemical Society (ACS)
47 publications, 25.27%
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Elsevier
46 publications, 24.73%
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Wiley
43 publications, 23.12%
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Springer Nature
14 publications, 7.53%
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Multidisciplinary Digital Publishing Institute (MDPI)
13 publications, 6.99%
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Royal Society of Chemistry (RSC)
8 publications, 4.3%
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The Electrochemical Society
4 publications, 2.15%
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Taylor & Francis
2 publications, 1.08%
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SAGE
2 publications, 1.08%
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Frontiers Media S.A.
2 publications, 1.08%
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Nonferrous Metals Society of China
1 publication, 0.54%
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Walter de Gruyter
1 publication, 0.54%
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American Institute of Physics (AIP)
1 publication, 0.54%
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Research Square Platform LLC
1 publication, 0.54%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 0.54%
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- We do not take into account publications without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Homann G. et al. Poly(Ethylene Oxide)-based Electrolyte for Solid-State-Lithium-Batteries with High Voltage Positive Electrodes: Evaluating the Role of Electrolyte Oxidation in Rapid Cell Failure // Scientific Reports. 2020. Vol. 10. No. 1. 4390
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Homann G., Stolz L., Nair J., Laskovic I. C., Winter M., Kasnatscheew J. Poly(Ethylene Oxide)-based Electrolyte for Solid-State-Lithium-Batteries with High Voltage Positive Electrodes: Evaluating the Role of Electrolyte Oxidation in Rapid Cell Failure // Scientific Reports. 2020. Vol. 10. No. 1. 4390
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TY - JOUR
DO - 10.1038/s41598-020-61373-9
UR - https://doi.org/10.1038/s41598-020-61373-9
TI - Poly(Ethylene Oxide)-based Electrolyte for Solid-State-Lithium-Batteries with High Voltage Positive Electrodes: Evaluating the Role of Electrolyte Oxidation in Rapid Cell Failure
T2 - Scientific Reports
AU - Homann, Gerrit
AU - Stolz, Lukas
AU - Nair, Jijeesh
AU - Laskovic, Isidora Cekic
AU - Winter, Martin
AU - Kasnatscheew, Johannes
PY - 2020
DA - 2020/03/09 00:00:00
PB - Springer Nature
IS - 1
VL - 10
SN - 2045-2322
SN - 2045-2322
ER -
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@article{2020_Homann,
author = {Gerrit Homann and Lukas Stolz and Jijeesh Nair and Isidora Cekic Laskovic and Martin Winter and Johannes Kasnatscheew},
title = {Poly(Ethylene Oxide)-based Electrolyte for Solid-State-Lithium-Batteries with High Voltage Positive Electrodes: Evaluating the Role of Electrolyte Oxidation in Rapid Cell Failure},
journal = {Scientific Reports},
year = {2020},
volume = {10},
publisher = {Springer Nature},
month = {mar},
url = {https://doi.org/10.1038/s41598-020-61373-9},
number = {1},
doi = {10.1038/s41598-020-61373-9}
}