Electrochemical frequency modulation for estimating exchange current density in solid oxide fuel cells

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Electrochemical frequency modulation (EFM) was applied for the first time to solid oxide fuel cells (SOFC) to obtain effective exchange current density and transfer coefficient values. Values obtained from EFM data were compared to values obtained from electrochemical impedance spectroscopy (EIS) and linear sweep voltammetry (LSV). A kinetic model based on Butler-Volmer (B-V) equation was used as the basis for the analysis. It was found that the values obtained via EFM were in good agreement with EIS and Tafel analyses. The obtained values for a cell within a SOFC stack closely ranged from 11-16 mA cm-2 for effective exchange current density and 0.88-1.3 for transfer coefficient with good repeatability.

Original languageEnglish (US)
Title of host publicationIonic and Mixed Conducting Ceramics 10
EditorsX. D. Zhou, M. B. Mogensen, T. M. Gur, T. Kawada, A. Manivannan
PublisherElectrochemical Society Inc.
Pages173-181
Number of pages9
Edition7
ISBN (Electronic)9781607685395
DOIs
StatePublished - Jan 1 2016
EventSymposium on Ionic and Mixed Conducting Ceramics 10 - 229th ECS Meeting - San Diego, United States
Duration: May 29 2016Jun 2 2016

Publication series

NameECS Transactions
Number7
Volume72
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherSymposium on Ionic and Mixed Conducting Ceramics 10 - 229th ECS Meeting
CountryUnited States
CitySan Diego
Period5/29/166/2/16

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Fingerprint Dive into the research topics of 'Electrochemical frequency modulation for estimating exchange current density in solid oxide fuel cells'. Together they form a unique fingerprint.

Cite this