Thermodynamic analysis on interface between perovskite electrode and YSZ electrolyte

Harumi Yokokawa, Natsuko Sakai, Tatsuya Kawada, Masayuki Dokiya

Research output: Contribution to journalArticle

90 Citations (Scopus)

Abstract

The thermodynamic analysis has been made to clarify chemical reactions between yttria-stabilized zirconia (YSZ) and lanthanum alkaline earth (Ca, Sr) transition metal perovskites; these can be basically categorized into (1) dissolution of alkaline earth oxide ions into YSZ with or without precipitation of other oxides and (2) formation of lanthanum (alkaline earth) zirconates at the interface. (La, Ca, Sr)MnO3 perovskites were chosen as model materials to examine what phenomena take place between YSZ and electrodes. In particular, a triangle diagram has been constructed to show those composition regions in which selected phenomena (formation of La2Zr2O7 and of SrZrO3 and dissolution of alkaline earth oxide) dominantly occur. The long term stability of interface has been discussed on the basis of the temperature dependence of the extent of these phenomena.

Original languageEnglish
Pages (from-to)398-401
Number of pages4
JournalSolid State Ionics
Volume40-41
Issue numberPART 1
DOIs
Publication statusPublished - 1990 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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