Analysis of the DRT as Evaluation Tool for EIS Data Analysis
ECS Transactions, vol. 103, pp. 1403–1412
Abstract
The Distribution of Relaxation Times (DRT) is an important analytical tool that is capable of giving initial information from Electrochemical Impedance Spectra (EIS) with respect to the number of relaxation processes occurring in the system and their corresponding relaxation frequencies. The DRT transformation with the Tikhonov regularization is used for analysis of EIS data obtained from the characterization Solid Oxide Fuel and Electrolysis Cells (SOFC/SOEC) operating at high temperatures. The effects of this transformation together with occurring pitfalls on the most commonly implemented circuit elements used to describe EIS data was investigated to gain a better understanding. The behavior of the DRT transformation as a function of the individual circuit elements is reported, the regularization parameter λ is taken as a sweep parameter to investigate its influence and optimal ranges for the selection of λ are presented.
Authors 8
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Markus Nohl Aachen
Forschungszentrum Jülich · RWTH Aachen University
Affiliation as printed
Forschungszentrum Jülich GmbH
RWTH Aachen University
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Affiliation as printed
Forschungszentrum Jülich GmbH
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Forschungszentrum Jülich · RWTH Aachen University
Affiliation as printed
Forschungszentrum Jülich GmbH
Institute of Physical Chemistry, RWTH Aachen University
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Affiliation as printed
Forschungszentrum Jülich GmbH
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Lucy Dittrich Aachen
Forschungszentrum Jülich · RWTH Aachen University
Affiliation as printed
Forschungszentrum Jülich GmbH
RWTH Aachen University
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Affiliation as printed
Forschungszentrum Jülich GmbH
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Rüdiger‐A. Eichel Aachen
Forschungszentrum Jülich · RWTH Aachen University
Affiliation as printed
Forschungszentrum Jülich GmbH
RWTH Aachen University
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Affiliation as printed
Forschungszentrum Jülich GmbH
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