Electrochemical characteristics of cathodes based on perovskites modified by ceria

E. Yu. Konysheva, Alfredo Damiano Bonaccorso, J. T. S. Irvine

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A system consisting of a solid oxide electrolyte of the Ce0.9Gd0.1O2 − x (CGO) composition in contact with a two-layer cathode based on a nonstoichiometric composition (La0.8Sr0.2)0.95MnO3 ± δ (LSM1) and a stoichiometric perovskite La0.8Sr0.2MnO3 ± δ (LSM2) is prepared by the tape-casting process. It was shown that the best electrochemical characteristics are achieved for a three-layer system LSM2/{CGO-LSM1}/CGO sintered at 1410°C. The use of Ce-modified perovskites La0.8Sr0.2MnO3 ± δ and La0.6Sr0.6CoO3 ± δ as the collector layer of two-layer electrodes allows the electrochemical characteristics at moderately high temperatures (600–750°C) to be improved.

Original languageEnglish
JournalRussian Journal of Electrochemistry
Volume46
Issue number7
Pages (from-to)805-810
ISSN1023-1935
DOIs
Publication statusPublished - 2010
Externally publishedYes

Keywords

  • Solid-oxide electrolyte
  • Compositions based on lanthanumstrontium manganites and cobaltites
  • Solid oxide fuel cell

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