Abstract:
Single and multilayer electrolytes for anode-supported solid-oxide fuel cells (SOFCs) have been
prepared by reactive magnetron sputtering and their electrochemical properties have been investigated.
Electrolyte layers based on gadolinia-doped ceria (GDC) and yttria-stabilized zirconia (YSZ) were
formed on NiO/YSZ substrates. The cells with single (YSZ), double (YSZ-GDC) and triple-layer
(GDC-YSZ-GDC) electrolytes were tested, with the thickness of each electrolyte layer from 1 to 5 µm.
The maximum cell performances of 460 and 2580 mW/cm2 were obtained for the SOFC with triplelayer electrolyte at the operating temperature of 600°C and 800°C respectively. The thickness of each
electrolyte layer was about 3, 1 and 1 µm respectively. The advantages of multilayer over single-layer
electrolytes are discussed.
