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

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

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 languageEnglish
Pages (from-to)658-668
JournalJournal of Power Sources
Volume294
Early online date5 Jul 2015
DOIs
Publication statusPublished - 1 Oct 2015

Fingerprint

Dive into the research topics of 'More accurate macro-models of solid oxide fuel cells through electrochemical and microstructural parameter estimation - Part I: Experimentation'. Together they form a unique fingerprint.

Cite this