Advanced Functional Materials, volume 30, issue 46, pages 2006289

Effective Optimization of High Voltage Solid‐State Lithium Batteries by Using Poly(ethylene oxide)‐Based Polymer Electrolyte with Semi‐Interpenetrating Network

Publication typeJournal Article
Publication date2020-08-23
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor19
ISSN1616301X, 16163028
Electronic, Optical and Magnetic Materials
Electrochemistry
Condensed Matter Physics
Biomaterials
Abstract
Solid polymer electrolytes (SPEs) are promising candidates for the realization of lithium metal batteries. However, the popular SPE based on poly(ethylene oxide) (PEO) reveals a “voltage noise”-failure during charge, for example, with high energy/high voltage electrodes like LiNi0.6Mn0.2Co0.2O2 (NMC622), which can be attributed to short-circuits via penetrating Li dendrites. This failure disappears when integrating PEO-based SPE in a semi interpenetrating network, which mainly consists of PEO units, as well. In this work, it is shown that this SPE allows performance improvement via elimination of the crystalline domains without significant sacrifice of mechanical integrity. Hence, a highly amorphous SPE can be obtained by a simple increase of plasticizing Li salts, which overall is beneficial, not only for the ionic conductivity, but also the homogeneity, while remaining mechanically stable and solid in its original shape even after storage at 60 °C for 7 days. These aspects are crucial for the performance of the modified SPE as they can suppress the failure-causing Li dendrite penetration while the electrochemical aspects, that is, anodic stability, are rather unaffected by the modification and remain stable (4.6 V vs Li│Li+). Overall, this optimized SPE enables stable cycling performance in NMC622│SPE│Li cells, even at 40 °C operation temperature.

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Homann G. et al. Effective Optimization of High Voltage Solid‐State Lithium Batteries by Using Poly(ethylene oxide)‐Based Polymer Electrolyte with Semi‐Interpenetrating Network // Advanced Functional Materials. 2020. Vol. 30. No. 46. p. 2006289.
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Homann G., Stolz L., Neuhaus K., Winter M., Kasnatscheew J. Effective Optimization of High Voltage Solid‐State Lithium Batteries by Using Poly(ethylene oxide)‐Based Polymer Electrolyte with Semi‐Interpenetrating Network // Advanced Functional Materials. 2020. Vol. 30. No. 46. p. 2006289.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1002/adfm.202006289
UR - https://doi.org/10.1002/adfm.202006289
TI - Effective Optimization of High Voltage Solid‐State Lithium Batteries by Using Poly(ethylene oxide)‐Based Polymer Electrolyte with Semi‐Interpenetrating Network
T2 - Advanced Functional Materials
AU - Stolz, Lukas
AU - Kasnatscheew, Johannes
AU - Homann, Gerrit
AU - Neuhaus, K.
AU - Winter, Martin
PY - 2020
DA - 2020/08/23 00:00:00
PB - Wiley
SP - 2006289
IS - 46
VL - 30
SN - 1616-301X
SN - 1616-3028
ER -
BibTex |
Cite this
BibTex Copy
@article{2020_Homann,
author = {Lukas Stolz and Johannes Kasnatscheew and Gerrit Homann and K. Neuhaus and Martin Winter},
title = {Effective Optimization of High Voltage Solid‐State Lithium Batteries by Using Poly(ethylene oxide)‐Based Polymer Electrolyte with Semi‐Interpenetrating Network},
journal = {Advanced Functional Materials},
year = {2020},
volume = {30},
publisher = {Wiley},
month = {aug},
url = {https://doi.org/10.1002/adfm.202006289},
number = {46},
pages = {2006289},
doi = {10.1002/adfm.202006289}
}
MLA
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MLA Copy
Homann, Gerrit, et al. “Effective Optimization of High Voltage Solid‐State Lithium Batteries by Using Poly(ethylene oxide)‐Based Polymer Electrolyte with Semi‐Interpenetrating Network.” Advanced Functional Materials, vol. 30, no. 46, Aug. 2020, p. 2006289. https://doi.org/10.1002/adfm.202006289.
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