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Fast Ion Conduction of Sintered Glass-Ceramic Lithium Ion Conductors Investigated by Impedance Spectroscopy and Coaxial Reflection Technique

Samsinger, R. F. ; Letz, M. ; Schuhmacher, J. ; Schneider, M. ; Roters, A. ; Kienemund, D. ; Maune, H. ; Kwade, A. (2024)
Fast Ion Conduction of Sintered Glass-Ceramic Lithium Ion Conductors Investigated by Impedance Spectroscopy and Coaxial Reflection Technique.
In: Journal of The Electrochemical Society, 2020, 167 (14)
doi: 10.26083/tuprints-00020396
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Fast Ion Conduction of Sintered Glass-Ceramic Lithium Ion Conductors Investigated by Impedance Spectroscopy and Coaxial Reflection Technique
Language: English
Date: 19 March 2024
Place of Publication: Darmstadt
Year of primary publication: 2020
Place of primary publication: Bristol
Publisher: IOP Publishing
Journal or Publication Title: Journal of The Electrochemical Society
Volume of the journal: 167
Issue Number: 14
Collation: 5 Seiten
DOI: 10.26083/tuprints-00020396
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

As the ionic conductivity of solid-state lithium ion conductors rises, knowledge of the detailed conductivity mechanisms is harder to obtain due to the limited frequency resolution of the traditional impedance spectrometers. Moreover, the data is easily affected by the local microstructure (i.e. pores, grain-boundaries) and the preparation conditions. The aim of this work is to demonstrate the feasibility of the coaxial reflection technique as a reliable tool to study fast ionic conductors (i.e. σ > 10⁻⁴ S cm⁻¹). Especially the relative permittivity can be determined more accurately at room temperature. For the first time the electrical performance of LATP and LLZO manufactured via a scalable top-down glass-ceramic route is evaluated. The density turns out to be a key parameter influencing both relative permittivity and resulting conductivities. For a 100% dense LATP sample the coaxial reflection technique reveals a high grain-core conductivity of 6 × 10⁻³ S cm⁻¹ similar to the conductivity of ideal single crystals.

Uncontrolled Keywords: Batteries - Lithium, Impedance Spectroscopy, coaxial reflection technique, ionic conductivity, all-solid-state batteries, LLZO, LATP
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-203967
Classification DDC: 600 Technology, medicine, applied sciences > 621.3 Electrical engineering, electronics
Divisions: 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) > Microwave Engineering
Date Deposited: 19 Mar 2024 10:17
Last Modified: 20 Jun 2024 13:42
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20396
PPN: 519251156
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