Hydrogen Production by High Temperature Electrolysis Using Solid Oxide Electrolyzer Cells

Experimental studies have been performed to understand the influence of the temperature and water vapor contents on the performance of high temperature electrolysis. The single cell composed of Ni-YSZ cathode support, YSZ electrolyte, LSM anode and, especially, ceramic interconnector. The experiments were performed over a range of steam inlet volume percent (30 and 50 vol%) and the operating temperature was 650∼800 °. Finally, the 3-cell short stack test was also investigated.