Composite cathode of perovskite-related oxides, (La,Sr) CoO 3-δ/ (La,Sr)2 CoO4-δ, for solid oxide fuel cells

Keiji Yashiro, Takashi Nakamura, Maya Sase, Florian Hermes, Kazuhisa Sato, Tatsuya Kawada, Junichiro Mizusaki

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

The heterointerface electrode, porous LaSrCoO4-δ on porous La0.6 Sr0.4 CoO3-δ, was examined by an ac impedance analysis. The performance of the heterointerface electrode was higher than those of LaSrCo O4-δ and La0.6 Sr0.4 CoO3-δ. The better performance is attributed to the enhancement of oxygen surface reaction at the heterointerface of LaSrCo O4-δ and La0.6 Sr0.4 CoO3-δ. The results are consistent with high surface exchange coefficients at the heterointerface between LaSrCoO4-δ and La0.6 Sr0.4 CoO3-δ, which were determined by oxygen isotope diffusion experiment.

Original languageEnglish
Pages (from-to)B135-B137
JournalElectrochemical and Solid-State Letters
Volume12
Issue number9
DOIs
Publication statusPublished - 2009

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

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