TY  - JOUR
AU  - Uhlenbruck, Sven
TI  - A Physical Derivation of the Capacitive Brick Layer Model in Polycrystalline Ceramics from Fundamental Electrodynamic Equations
JO  - Journal of the Electrochemical Society
VL  - 169
IS  - 10
SN  - 0013-4651
CY  - Bristol
PB  - IOP Publishing
M1  - FZJ-2022-03658
SP  - 106509 , 5 pages
PY  - 2022
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000867412600001
DO  - DOI:10.1149/1945-7111/ac96b0
UR  - https://juser.fz-juelich.de/record/910178
ER  -