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

✍ Scribed by Hitoshi Naito; Hiroo Yugami; Haruo Arashi

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 275 KB
• Volume: 90
• Category: Article
• ISSN: 0167-2738
• DOI: 10.1016/s0167-2738(96)00405-5

✦ Synopsis

Electrical properties of In,O,-doped yttria-stabilized zirconia (In-YSZ) were investigated. The solubility limit of In,O, in YSZ (10 mol% Y,O,) is 17.5 mol%. The total conductivity depended on the concentration of $0,.

The activation energy of In-YSZ was higher than that of YSZ. From the oxygen partial pressure (PO,) dependence of the total conductivity of In-YSZ, the electronic conductivity increased with increasing In,O, 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.