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Tailoring the Preformed Solid Electrolyte Interphase in Lithium Metal Batteries: Impact of Fluoroethylene Carbonate
[Image: see text] The film-forming electrolyte additive/co-solvent fluoroethylene carbonate (FEC) can play a crucial role in enabling high-energy-density lithium metal batteries (LMBs). Its beneficial impact on homogeneous and compact lithium (Li) deposition morphology leads to improved Coulombic ef...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10685346/ https://www.ncbi.nlm.nih.gov/pubmed/37936378 http://dx.doi.org/10.1021/acsami.3c12797 |
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author | Weintz, Dominik Kühn, Sebastian P. Winter, Martin Cekic-Laskovic, Isidora |
author_facet | Weintz, Dominik Kühn, Sebastian P. Winter, Martin Cekic-Laskovic, Isidora |
author_sort | Weintz, Dominik |
collection | PubMed |
description | [Image: see text] The film-forming electrolyte additive/co-solvent fluoroethylene carbonate (FEC) can play a crucial role in enabling high-energy-density lithium metal batteries (LMBs). Its beneficial impact on homogeneous and compact lithium (Li) deposition morphology leads to improved Coulombic efficiency (CE) of the resulting cell chemistry during galvanostatic cycling and consequently an extended cell lifetime. Herein, the impact of this promising additive/co-solvent on selected properties of LMBs is systematically investigated by utilizing an in-house developed lithium pretreatment method. The results reveal that as long as FEC is present in the organic carbonate-based electrolyte, a dense mosaic-like lithium morphology of Li deposits with a reduced polarization of only 20 mV combined with a prolonged cycle life is achieved. When the pretreated Li electrodes with an FEC-derived preformed SEI (pSEI) are galvanostatically cycled with the FEC-free electrolyte, the described benefits induced by the additive are not observable. These results underline that the favorable properties of the FEC-derived SEI are beneficial only if there is unreacted FEC in the electrolyte formulation left to constantly reform the interphase layer, which is especially important for anodes with high-volume changes and dynamic surfaces like lithium metal and lithiated silicon. |
format | Online Article Text |
id | pubmed-10685346 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-106853462023-11-30 Tailoring the Preformed Solid Electrolyte Interphase in Lithium Metal Batteries: Impact of Fluoroethylene Carbonate Weintz, Dominik Kühn, Sebastian P. Winter, Martin Cekic-Laskovic, Isidora ACS Appl Mater Interfaces [Image: see text] The film-forming electrolyte additive/co-solvent fluoroethylene carbonate (FEC) can play a crucial role in enabling high-energy-density lithium metal batteries (LMBs). Its beneficial impact on homogeneous and compact lithium (Li) deposition morphology leads to improved Coulombic efficiency (CE) of the resulting cell chemistry during galvanostatic cycling and consequently an extended cell lifetime. Herein, the impact of this promising additive/co-solvent on selected properties of LMBs is systematically investigated by utilizing an in-house developed lithium pretreatment method. The results reveal that as long as FEC is present in the organic carbonate-based electrolyte, a dense mosaic-like lithium morphology of Li deposits with a reduced polarization of only 20 mV combined with a prolonged cycle life is achieved. When the pretreated Li electrodes with an FEC-derived preformed SEI (pSEI) are galvanostatically cycled with the FEC-free electrolyte, the described benefits induced by the additive are not observable. These results underline that the favorable properties of the FEC-derived SEI are beneficial only if there is unreacted FEC in the electrolyte formulation left to constantly reform the interphase layer, which is especially important for anodes with high-volume changes and dynamic surfaces like lithium metal and lithiated silicon. American Chemical Society 2023-11-08 /pmc/articles/PMC10685346/ /pubmed/37936378 http://dx.doi.org/10.1021/acsami.3c12797 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Weintz, Dominik Kühn, Sebastian P. Winter, Martin Cekic-Laskovic, Isidora Tailoring the Preformed Solid Electrolyte Interphase in Lithium Metal Batteries: Impact of Fluoroethylene Carbonate |
title | Tailoring the Preformed
Solid Electrolyte Interphase
in Lithium Metal Batteries: Impact of Fluoroethylene Carbonate |
title_full | Tailoring the Preformed
Solid Electrolyte Interphase
in Lithium Metal Batteries: Impact of Fluoroethylene Carbonate |
title_fullStr | Tailoring the Preformed
Solid Electrolyte Interphase
in Lithium Metal Batteries: Impact of Fluoroethylene Carbonate |
title_full_unstemmed | Tailoring the Preformed
Solid Electrolyte Interphase
in Lithium Metal Batteries: Impact of Fluoroethylene Carbonate |
title_short | Tailoring the Preformed
Solid Electrolyte Interphase
in Lithium Metal Batteries: Impact of Fluoroethylene Carbonate |
title_sort | tailoring the preformed
solid electrolyte interphase
in lithium metal batteries: impact of fluoroethylene carbonate |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10685346/ https://www.ncbi.nlm.nih.gov/pubmed/37936378 http://dx.doi.org/10.1021/acsami.3c12797 |
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