Simple infiltrated microstructure polarization loss estimation (SIMPLE) model predictions of today and tomorrow's nano-composite SOFC cathodes

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

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Abstract

The Simple Infiltrated Polarization Loss Estimation (SIMPLE) model was used to predict the performance of a variety of mixed ionic electron conductor (MIEC) - ion conductor (IC) Solid Oxide Fuel Cell (SOFC) nano-composite cathodes. These predictions agree with the reported values to within 70% or better (without the use of fitting parameters) at all temperatures. Systematic SIMPLE model variation of typical nano-composite cathode geometrical parameters reveals little change in cathode performance with cathode thickness and/or porosity above a critical cathode thickness. Further, SIMPLE modeling suggests that conventionally structured nano-composite cathodes with MIEC surface resistances 10 times lower than Sm 0.5Sr 0.5CoO 3-x (SSC) and ionic conductivities 10 times higher than Ce 0.9Gd 0.1O 1.95 (GDC) could achieve polarization resistances of 0.1 Ωcm 2 at ∼450°C. Likewise, conventionally structured cathodes with 100 times and 1000 times better materials than SSC and GDC could achieve polarization resistances of 0.1 Ωcm 2 at ∼375°C, and ∼300°C, respectively.

LanguageEnglish (US)
Title of host publicationECS Transactions
Pages2321-2329
Number of pages9
Volume35
Edition3 PART 3
DOIs
StatePublished - 2011
Event12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting - Montreal, QC, Canada
Duration: May 1 2011May 6 2011

Other

Other12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting
CountryCanada
CityMontreal, QC
Period5/1/115/6/11

Profile

Solid oxide fuel cells (SOFC)
Cathodes
Polarization
Microstructure
Composite materials
Surface resistance
Electrons
Ionic conductivity
Porosity
Ions

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Simple infiltrated microstructure polarization loss estimation (SIMPLE) model predictions of today and tomorrow's nano-composite SOFC cathodes. / Wang, Lin; Nicholas, Jason D.

ECS Transactions. Vol. 35 3 PART 3. ed. 2011. p. 2321-2329.

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

Wang, L & Nicholas, JD 2011, Simple infiltrated microstructure polarization loss estimation (SIMPLE) model predictions of today and tomorrow's nano-composite SOFC cathodes. in ECS Transactions. 3 PART 3 edn, vol. 35, pp. 2321-2329, 12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting, Montreal, QC, Canada, 5/1/11. DOI: 10.1149/1.3570228
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