La0.6Ba0.4CoO3 as a cathode material for solid oxide fuel cells using a BaCeO3 electrolyte

Michihisa Koyama, Ching Ju Wen, Koichi Yamada

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

The cathodic reaction mechanism of a solid oxide fuel cell (SOFC) was investigated for an electrode-electrolyte system of La0.6Ba0.4CoO3 (LBC)-BaCeO3, under both the O2- conducting and H+/O2- mixed-ionic conducting conditions. AC impedance measurements were carried out, and the electrode interfacial conductivities were calculated. The experimental results revealed that the processes dominating the electrode resistance for the O2- conducting and the H+/O2- mixed-ionic conducting conditions are different. It was also found that the process dominating the electrode resistance changes at 700 °C under H+/O2- mixed-ionic conducting conditions. The process dominating the electrode resistance above 700 °C is postulated to be the reaction OLBC+HLBC→OHLBC. LBC showed high-performance cathode characteristics for a SOFC using BaCeO3 electrolyte.

Original languageEnglish
Pages (from-to)87-91
Number of pages5
JournalJournal of the Electrochemical Society
Volume147
Issue number1
DOIs
Publication statusPublished - Jan 1 2000

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Solid oxide fuel cells (SOFC)
Electrolytes
Cathodes
Electrodes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

Cite this

La0.6Ba0.4CoO3 as a cathode material for solid oxide fuel cells using a BaCeO3 electrolyte. / Koyama, Michihisa; Wen, Ching Ju; Yamada, Koichi.

In: Journal of the Electrochemical Society, Vol. 147, No. 1, 01.01.2000, p. 87-91.

Research output: Contribution to journalArticle

Koyama, Michihisa ; Wen, Ching Ju ; Yamada, Koichi. / La0.6Ba0.4CoO3 as a cathode material for solid oxide fuel cells using a BaCeO3 electrolyte. In: Journal of the Electrochemical Society. 2000 ; Vol. 147, No. 1. pp. 87-91.
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