Journal Article

FZJ-2022-03658

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png A Physical Derivation of the Capacitive Brick Layer Model in Polycrystalline Ceramics from Fundamental Electrodynamic Equations

Uhlenbruck, S. (Corresponding author)FZJ*

2022
IOP Publishing Bristol

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Please use a persistent id in citations: http://hdl.handle.net/2128/32072  doi:10.1149/1945-7111/ac96b0

Abstract: The brick layer model in electrochemical impedance spectroscopy has been successfully used for decades to describe the behaviorof polycrystalline materials. Equivalent circuits were created to obtain information about grain and grain boundary properties fromelectrochemical impedance spectroscopy measurements. Previous publications have expanded on initial interpretations anddescribed grains and grain boundaries as plate capacitors filled with the grain and grain boundary material, respectively. However,this approach poses a number of significant issues, since key assumptions for the equivalent circuits do not match with the actualexperimental situation of the material when exposed to an outer electric field, thus calling into question the entire approach for theinterpretation.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)
2. Helmholtz-Institut Münster Ionenleiter für Energiespeicher (IEK-12)

Research Program(s):

1. 1221 - Fundamentals and Materials (POF4-122) (POF4-122)

Appears in the scientific report 2022

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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