More accurate macro-models of solid oxide fuel cells through electrochemical and microstructural parameter estimation - Part I: Experimentation

Carlos Boigues Munoz; Davide Pumiglia; Stephen J. Mcphail; Dario Montinaro; Gabriele Comodi; Giulio Santori; Maurizio Carlini; Fabio Polonara

doi:10.1016/j.jpowsour.2015.06.118

More accurate macro-models of solid oxide fuel cells through electrochemical and microstructural parameter estimation - Part I: Experimentation

Carlos Boigues Munoz, Davide Pumiglia, Stephen J. Mcphail, Dario Montinaro, Gabriele Comodi, Giulio Santori, Maurizio Carlini, Fabio Polonara

School of Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The distributed relaxation times (DRT) method has been employed in order to deconvolute the electrochemical impedance spectroscopy (EIS) measurements carried out on a Ni-YSZ|YSZ|Pr2NiO4+δ – GDC solid oxide fuel cell (SOFC). This has enabled to shed light on the diverse physicochemical processes occurring within the aforementioned cell by individuating the characteristic relaxation times of these by means of a specifically designed experimental campaign where temperature and gas compositions in anode and cathode were varied one at a time. A comprehensive equivalent circuit model (ECM) has thus been generated based on the processes observed in the DRT spectra. This ECM has proved to be instrumental for the obtainment of parameters which describe the microstructural and electrochemical properties of the SOFC when used contemporaneously with experimental results and modelling theory (described in Part II of this work).

Original language	English
Pages (from-to)	658-668
Journal	Journal of Power Sources
Volume	294
Early online date	5 Jul 2015
DOIs	https://doi.org/10.1016/j.jpowsour.2015.06.118
Publication status	Published - 1 Oct 2015

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10.1016/j.jpowsour.2015.06.118

PART_I_More accurate macro-models_Experimentation_Solid Oxide Fuel CellsAccepted author manuscript, 1.02 MB

http://linkinghub.elsevier.com/retrieve/pii/S0378775315300033

Giulio Santori
- School of Engineering - Reader
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title = "More accurate macro-models of solid oxide fuel cells through electrochemical and microstructural parameter estimation - Part I: Experimentation",

abstract = "The distributed relaxation times (DRT) method has been employed in order to deconvolute the electrochemical impedance spectroscopy (EIS) measurements carried out on a Ni-YSZ|YSZ|Pr2NiO4+δ – GDC solid oxide fuel cell (SOFC). This has enabled to shed light on the diverse physicochemical processes occurring within the aforementioned cell by individuating the characteristic relaxation times of these by means of a specifically designed experimental campaign where temperature and gas compositions in anode and cathode were varied one at a time. A comprehensive equivalent circuit model (ECM) has thus been generated based on the processes observed in the DRT spectra. This ECM has proved to be instrumental for the obtainment of parameters which describe the microstructural and electrochemical properties of the SOFC when used contemporaneously with experimental results and modelling theory (described in Part II of this work).",

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AU - Boigues Munoz, Carlos

AU - Pumiglia, Davide

AU - Mcphail, Stephen J.

AU - Montinaro, Dario

AU - Comodi, Gabriele

AU - Santori, Giulio

AU - Carlini, Maurizio

AU - Polonara, Fabio

PY - 2015/10/1

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AB - The distributed relaxation times (DRT) method has been employed in order to deconvolute the electrochemical impedance spectroscopy (EIS) measurements carried out on a Ni-YSZ|YSZ|Pr2NiO4+δ – GDC solid oxide fuel cell (SOFC). This has enabled to shed light on the diverse physicochemical processes occurring within the aforementioned cell by individuating the characteristic relaxation times of these by means of a specifically designed experimental campaign where temperature and gas compositions in anode and cathode were varied one at a time. A comprehensive equivalent circuit model (ECM) has thus been generated based on the processes observed in the DRT spectra. This ECM has proved to be instrumental for the obtainment of parameters which describe the microstructural and electrochemical properties of the SOFC when used contemporaneously with experimental results and modelling theory (described in Part II of this work).

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DO - 10.1016/j.jpowsour.2015.06.118

M3 - Article

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VL - 294

SP - 658

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JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

More accurate macro-models of solid oxide fuel cells through electrochemical and microstructural parameter estimation - Part I: Experimentation

Abstract

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Giulio Santori

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