ToF-SIMS sputter depth profiling of interphases and coatings on lithium metal surfaces

Abstract Lithium metal as a negative electrode material offers ten times the specific capacity of graphitic electrodes, but its rechargeable operation poses challenges like excessive and continuous interphase formation, high surface area lithium deposits and safety issues. Improving the lithium | el...

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Main Authors: Maximilian Mense, Marlena M. Bela, Sebastian P. Kühn, Isidora Cekic-Laskovic, Markus Börner, Simon Wiemers-Meyer, Martin Winter, Sascha Nowak
Format: Article
Language:English
Published: Nature Portfolio 2025-02-01
Series:Communications Chemistry
Online Access:https://doi.org/10.1038/s42004-025-01426-0
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author Maximilian Mense
Marlena M. Bela
Sebastian P. Kühn
Isidora Cekic-Laskovic
Markus Börner
Simon Wiemers-Meyer
Martin Winter
Sascha Nowak
author_facet Maximilian Mense
Marlena M. Bela
Sebastian P. Kühn
Isidora Cekic-Laskovic
Markus Börner
Simon Wiemers-Meyer
Martin Winter
Sascha Nowak
author_sort Maximilian Mense
collection DOAJ
description Abstract Lithium metal as a negative electrode material offers ten times the specific capacity of graphitic electrodes, but its rechargeable operation poses challenges like excessive and continuous interphase formation, high surface area lithium deposits and safety issues. Improving the lithium | electrolyte interface and interphase requires powerful surface analysis techniques, such as ToF-SIMS sputter depth profiling.This study investigates lithium metal sections with an SEI layer by ToF-SIMS using different sputter ions. An optimal sputter ion is chosen based on the measured ToF-SIMS sputter depth profiles and SEM analysis of the surface damage. Further, this method is adapted to lithium metal foil with an intermetallic coating. ToF-SIMS sputter depth profiles in both polarities provide comprehensive insights into the coating structure. Both investigations highlight the value of ToF-SIMS sputter depth profiling in lithium metal battery research and offer guidance for future studies.
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issn 2399-3669
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publishDate 2025-02-01
publisher Nature Portfolio
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series Communications Chemistry
spelling doaj-art-1bb142501ad143978f6d63695cd1d29f2025-02-09T12:16:22ZengNature PortfolioCommunications Chemistry2399-36692025-02-01811810.1038/s42004-025-01426-0ToF-SIMS sputter depth profiling of interphases and coatings on lithium metal surfacesMaximilian Mense0Marlena M. Bela1Sebastian P. Kühn2Isidora Cekic-Laskovic3Markus Börner4Simon Wiemers-Meyer5Martin Winter6Sascha Nowak7Münster Electrochemical Energy Technology (MEET), University of MünsterMünster Electrochemical Energy Technology (MEET), University of MünsterHelmholtz-Institute Münster, IMD-4, Forschungszentrum Jülich GmbHHelmholtz-Institute Münster, IMD-4, Forschungszentrum Jülich GmbHMünster Electrochemical Energy Technology (MEET), University of MünsterMünster Electrochemical Energy Technology (MEET), University of MünsterMünster Electrochemical Energy Technology (MEET), University of MünsterMünster Electrochemical Energy Technology (MEET), University of MünsterAbstract Lithium metal as a negative electrode material offers ten times the specific capacity of graphitic electrodes, but its rechargeable operation poses challenges like excessive and continuous interphase formation, high surface area lithium deposits and safety issues. Improving the lithium | electrolyte interface and interphase requires powerful surface analysis techniques, such as ToF-SIMS sputter depth profiling.This study investigates lithium metal sections with an SEI layer by ToF-SIMS using different sputter ions. An optimal sputter ion is chosen based on the measured ToF-SIMS sputter depth profiles and SEM analysis of the surface damage. Further, this method is adapted to lithium metal foil with an intermetallic coating. ToF-SIMS sputter depth profiles in both polarities provide comprehensive insights into the coating structure. Both investigations highlight the value of ToF-SIMS sputter depth profiling in lithium metal battery research and offer guidance for future studies.https://doi.org/10.1038/s42004-025-01426-0
spellingShingle Maximilian Mense
Marlena M. Bela
Sebastian P. Kühn
Isidora Cekic-Laskovic
Markus Börner
Simon Wiemers-Meyer
Martin Winter
Sascha Nowak
ToF-SIMS sputter depth profiling of interphases and coatings on lithium metal surfaces
Communications Chemistry
title ToF-SIMS sputter depth profiling of interphases and coatings on lithium metal surfaces
title_full ToF-SIMS sputter depth profiling of interphases and coatings on lithium metal surfaces
title_fullStr ToF-SIMS sputter depth profiling of interphases and coatings on lithium metal surfaces
title_full_unstemmed ToF-SIMS sputter depth profiling of interphases and coatings on lithium metal surfaces
title_short ToF-SIMS sputter depth profiling of interphases and coatings on lithium metal surfaces
title_sort tof sims sputter depth profiling of interphases and coatings on lithium metal surfaces
url https://doi.org/10.1038/s42004-025-01426-0
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