Composite cathodes on barium cerate proton conducting electrolyte for intermediate temperature solid oxide fuel cells (IT-SOFCs)

Emiliana Fabbri*, Silvia Licoccia, Enrico Traversa, Eric D. Wachsman

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Composite cathodes were investigated for application in intermediate temperature solid oxide fuel cells (IT-SOFCs) based on ceramic proton conducting electrolytes. Composite cathodes were made combining a mixed protonic/electronic conductor phase, BaCe0.9Yb0.1,O 3-delta; (1OYbBC), and a mixed oxygen-ion/electronic conductor. La0.6Sr0.4Co0.2Fe0.803 (LSCF). Area specific resistance (ASR) measurements were performed in wet air for LSCF/1OYbBC composite cathodes, changing the weight ratio between the solid phases, the particle size and the sintering procedure. For comparison, the ASR of single phase LSCF cathode was studied in the same conditions. The lowest ASR values were obtained from the LSCF/1OYbBC composite cathode prepared using nanometre particle powder of 1OYbBC and sub-micrometer particle powder of LSCF in a 1:1 weight ratio and sintered at 1100°C. Fuel cell polarization curves demonstrated superior performance of the LSCF/1OYbBC(l :1) cathode with respect to Pt.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium Proceedings - Solid-State Ionics - 2008
Pages41-46
Number of pages6
Volume1126
StatePublished - 2009
Externally publishedYes
EventSolid-State Ionics 2008 - 2008 MRS Fall Meeting - Boston, MA, United States
Duration: Dec 1 2008Dec 5 2008

Other

OtherSolid-State Ionics 2008 - 2008 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period12/1/0812/5/08

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)
  • Condensed Matter Physics

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