Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1294207 | Journal of Power Sources | 2009 | 6 Pages |
Zirconia doped with scandia and ceria (10Sc1CeSZ) is presented as an electrolyte in solid oxide electrolysis cells (SOECs) for hydrogen production at intermediate temperatures. At 700 °C, the conductivity of the 10Sc1CeSZ is 0.057 S cm−1 and the ohmic resistance at OCV is 0.27 Ω cm2. The electrolysis tests using Pt electrodes show that the oxygen ion conduction in the electrolyte produces high current densities when operating as a SOEC. The performance of cells with Ni-YSZ (yttria stabilised zirconia) cathodes are also tested under external potential load at temperatures between 600 °C and 900 °C. These preliminary results demonstrate the suitability of 10Sc1CeSZ as an electrolyte for SOECs although further work is required to develop suitable electrodes.