Electrical properties of ZrO2-In2O3-Y2O3 and its application to a membrane for gas separation

Hitoshi Naito, Hiroo Yugami, Haruo Arashi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Electrical properties of In2O3-doped yttria-stabilized zirconia (In-YSZ) were investigated. The solubility limit of In2O3 in YSZ (10 mol% Y2O3) is 17.5 mol%. The total conductivity depended on the concentration of In2O3. The activation energy of In-YSZ was higher than that of YSZ. From the oxygen partial pressure (Po2) dependence of the total conductivity of In-YSZ, the electronic conductivity increased with increasing In2O3 concentration at low oxygen partial pressures and at high temperature. From the results, we discussed the applicability of In-YSZ to a membrane for hydrogen production from direct water splitting at high temperature.

Original languageEnglish
Pages (from-to)173-176
Number of pages4
JournalSolid State Ionics
Issue number1-4
Publication statusPublished - 1996 Sep


  • Membrane for gas separation
  • Mixed conductor
  • ZrO-InO-YO

ASJC Scopus subject areas

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

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