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Interplay of Dynamic Constriction and Interface Morphology between Reversible Metal Anode and Solid Electrolyte in Solid State Batteries
[Image: see text] In an all-solid-state battery, the electrical contact between its individual components is of key relevance in addition to the electrochemical stability of its interfaces. Impedance spectroscopy is particularly suited for the non-destructive investigation of interfaces and of their...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9376931/ https://www.ncbi.nlm.nih.gov/pubmed/35878322 http://dx.doi.org/10.1021/acsami.2c07077 |
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author | Eckhardt, Janis K. Klar, Peter J. Janek, Jürgen Heiliger, Christian |
author_facet | Eckhardt, Janis K. Klar, Peter J. Janek, Jürgen Heiliger, Christian |
author_sort | Eckhardt, Janis K. |
collection | PubMed |
description | [Image: see text] In an all-solid-state battery, the electrical contact between its individual components is of key relevance in addition to the electrochemical stability of its interfaces. Impedance spectroscopy is particularly suited for the non-destructive investigation of interfaces and of their stability under load. Establishing a valid correlation between microscopic processes and the macroscopic impedance signal, however, is challenging and prone to errors. Here, we use a 3D electric network model to systematically investigate the effect of various electrode/sample interface morphologies on the impedance spectrum. It is demonstrated that the interface impedance generally results from a charge transfer step and a geometric constriction contribution. The weights of both signals depend strongly on the material parameters as well as on the interface morphology. Dynamic constriction results from a non-ideal local contact, e.g., from pores or voids, which reduce the electrochemical active surface area only in a certain frequency range. Constriction effects dominate the interface behavior for systems with small charge transfer resistance like garnet-type solid electrolytes in contact with a lithium metal electrode. An in-depth analysis of the origin and the characteristics of the constriction phenomenon and their dependence on the interface morphology is conducted. The discussion of the constriction effect provides further insight into the processes at the microscopic level, which are, e.g., relevant in the case of reversible metal anodes. |
format | Online Article Text |
id | pubmed-9376931 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-93769312022-08-16 Interplay of Dynamic Constriction and Interface Morphology between Reversible Metal Anode and Solid Electrolyte in Solid State Batteries Eckhardt, Janis K. Klar, Peter J. Janek, Jürgen Heiliger, Christian ACS Appl Mater Interfaces [Image: see text] In an all-solid-state battery, the electrical contact between its individual components is of key relevance in addition to the electrochemical stability of its interfaces. Impedance spectroscopy is particularly suited for the non-destructive investigation of interfaces and of their stability under load. Establishing a valid correlation between microscopic processes and the macroscopic impedance signal, however, is challenging and prone to errors. Here, we use a 3D electric network model to systematically investigate the effect of various electrode/sample interface morphologies on the impedance spectrum. It is demonstrated that the interface impedance generally results from a charge transfer step and a geometric constriction contribution. The weights of both signals depend strongly on the material parameters as well as on the interface morphology. Dynamic constriction results from a non-ideal local contact, e.g., from pores or voids, which reduce the electrochemical active surface area only in a certain frequency range. Constriction effects dominate the interface behavior for systems with small charge transfer resistance like garnet-type solid electrolytes in contact with a lithium metal electrode. An in-depth analysis of the origin and the characteristics of the constriction phenomenon and their dependence on the interface morphology is conducted. The discussion of the constriction effect provides further insight into the processes at the microscopic level, which are, e.g., relevant in the case of reversible metal anodes. American Chemical Society 2022-07-25 2022-08-10 /pmc/articles/PMC9376931/ /pubmed/35878322 http://dx.doi.org/10.1021/acsami.2c07077 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Eckhardt, Janis K. Klar, Peter J. Janek, Jürgen Heiliger, Christian Interplay of Dynamic Constriction and Interface Morphology between Reversible Metal Anode and Solid Electrolyte in Solid State Batteries |
title | Interplay of Dynamic
Constriction and Interface Morphology
between Reversible Metal Anode and Solid Electrolyte in Solid State
Batteries |
title_full | Interplay of Dynamic
Constriction and Interface Morphology
between Reversible Metal Anode and Solid Electrolyte in Solid State
Batteries |
title_fullStr | Interplay of Dynamic
Constriction and Interface Morphology
between Reversible Metal Anode and Solid Electrolyte in Solid State
Batteries |
title_full_unstemmed | Interplay of Dynamic
Constriction and Interface Morphology
between Reversible Metal Anode and Solid Electrolyte in Solid State
Batteries |
title_short | Interplay of Dynamic
Constriction and Interface Morphology
between Reversible Metal Anode and Solid Electrolyte in Solid State
Batteries |
title_sort | interplay of dynamic
constriction and interface morphology
between reversible metal anode and solid electrolyte in solid state
batteries |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9376931/ https://www.ncbi.nlm.nih.gov/pubmed/35878322 http://dx.doi.org/10.1021/acsami.2c07077 |
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