Influence of pressurization on the properties of (La1-xSr x)1-z(Co1-yFey)O 3-δ (x = 0.4; y = 0.8; z = 0-0.04) as cathode materials for IT-SOFCs

Masashi Mori, Yu Liu, Shin Ichi Hashimoto

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A-site deficiency was introduced into the perovskite-type oxides in the compositions (La1-xSrx)1-z(Co 1-yFey)O3-δ (x = 0.4, y = 0.8) with z = 0, 0.02 and 0.04. Tolerance limit with the A-site deficiency for single perovskite phase was rather small, approximately 0.02. The electrical conductivity of the perovskites was investigated in a porous body at elevated temperatures in air with the pressures of 0.1-0.7 MPa. The pressurization slightly increases the conductivity. The A-site deficient material exhibits a higher physical reactivity than the stoichiometric one under the pressurized conditions.

Original languageEnglish
Pages (from-to)140-142
Number of pages3
JournalElectrochemistry
Volume77
Issue number2
DOIs
Publication statusPublished - 2009 Feb

Keywords

  • A-site deficiency
  • Cathode
  • LaSrCo FeO
  • Pressurization
  • Solid oxide fuel cells

ASJC Scopus subject areas

  • Electrochemistry

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