RuO2-based dense electrodes for ESB electrolyte IT-SOFCs

Vincenzo Esposito*, Enrico Traversa, Eric D. Wachsman

*Corresponding author for this work

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

3 Scopus citations

Abstract

In this work, we evaluated the performance of dense electrodes based on Ru oxides for Er2O3 stabilized Bi2O3 (ESB) electrolyte. To fabricate symmetric cells, RuO2 thick films were deposited by screen printing on the parallel surface of dense ESB electrolyte pellets. A very dense layer of Er/Bi ruthenate (EBR) was formed at the interface by in situ solid state reaction between the dense pellet (ESB) and the deposited RuO2. The reaction led to the formation at the electrode/electrolyte interface of a layer with pyrochlore structure. The electrochemical performance of the EBR/ESB/EBR symmetric cell was investigated using electrochemical impedance spectroscopy (EIS) measurements in air. The dense morphology of the electrodes allowed quantification of the triple phase boundary (TPB) length and its effect on the area specific resistance (ASR).

Original languageEnglish (US)
Title of host publicationSolid Oxide Fuel Cells IX, SOFC IX
Subtitle of host publicationMaterials - Proceedings of the International Symposium
EditorsS.C. Singhal, J. Mizusaki
Pages1764-1770
Number of pages7
VolumePV 2005-07
StatePublished - 2005
Externally publishedYes
Event9th International Symposium on Solid Oxide Fuel Cells, SOFC IX - Quebec, Canada
Duration: May 15 2005May 20 2005

Other

Other9th International Symposium on Solid Oxide Fuel Cells, SOFC IX
CountryCanada
CityQuebec
Period05/15/0505/20/05

ASJC Scopus subject areas

  • Engineering(all)

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