Finite element modeling of idealized infiltrated composite solid oxide fuel cell cathodes

Jason D. Nicholas, Scott A. Barnett

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

Abstract

Using a two-dimensional finite element approach, the polarization resistance of idealized, branched, nano-particulate, composite cathodes was determined. Porous CGO, LSGM, or YSZ networks infiltrated with additional ionic conductor and subsequently infiltrated with LSCF or BSCF were modeled. For fixed mixed conductor particle size, dual nano-particle infiltrations (ionic + mixed conductor) resulted in an order of magnitude polarization resistance decrease, compared to single component mixed conductor infiltrations. For most SOFC relevant temperatures (500-900C), geometries, and material combinations, cathode performance was limited by the charge transfer reaction occurring at the mixed conductor interface and therefore scaled with the cathode surface area, as long as the cathode thickness was

Original languageEnglish (US)
Title of host publicationECS Transactions
Pages361-377
Number of pages17
Volume13
Edition26
DOIs
StatePublished - 2008
Externally publishedYes
EventIonic and Mixed Conducting Ceramics 6 - 213th ECS Meeting - Phoenix, AZ, United States

Other

OtherIonic and Mixed Conducting Ceramics 6 - 213th ECS Meeting
CountryUnited States
CityPhoenix, AZ
Period5/18/085/23/08

Profile

Cathodes
Solid oxide fuel cells (SOFC)
Infiltration
Polarization
Composite materials
Charge transfer
Particle size
Geometry
Temperature

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Nicholas, J. D., & Barnett, S. A. (2008). Finite element modeling of idealized infiltrated composite solid oxide fuel cell cathodes. In ECS Transactions (26 ed., Vol. 13, pp. 361-377). DOI: 10.1149/1.3050407

Finite element modeling of idealized infiltrated composite solid oxide fuel cell cathodes. / Nicholas, Jason D.; Barnett, Scott A.

ECS Transactions. Vol. 13 26. ed. 2008. p. 361-377.

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

Nicholas, JD & Barnett, SA 2008, Finite element modeling of idealized infiltrated composite solid oxide fuel cell cathodes. in ECS Transactions. 26 edn, vol. 13, pp. 361-377, Ionic and Mixed Conducting Ceramics 6 - 213th ECS Meeting, Phoenix, AZ, United States, 18-23 May. DOI: 10.1149/1.3050407
Nicholas JD, Barnett SA. Finite element modeling of idealized infiltrated composite solid oxide fuel cell cathodes. In ECS Transactions. 26 ed. Vol. 13. 2008. p. 361-377. Available from, DOI: 10.1149/1.3050407

Nicholas, Jason D.; Barnett, Scott A. / Finite element modeling of idealized infiltrated composite solid oxide fuel cell cathodes.

ECS Transactions. Vol. 13 26. ed. 2008. p. 361-377.

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

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