Phillips 66
METHOD OF MAKING A LAYERED ELECTROLYTE

Abstract:

A method of forming a solid oxide fuel cell. The method begins by tape casting an anode support. Next an anode functional layer slurry comprising of NiO and ScCeSZ ceramic powder is coated onto the anode support. The anode functional layer slurry is then dried to form an NiO--ScCeSZ anode functional layer on the anode support. A first electrolyte layer comprising of a ScCeSZ slurry is then coated onto the NiO--ScCeSZ functional layer. The first electrolyte layer is then dried to form a ScCeSZ electrolyte layer on the NiO--ScCeSZ functional layer. A second electrolyte layer comprising of a samarium doped CeO.sub.2 (SDC) slurry is then coated onto the ScCeSZ electrolyte layer. The second electrolyte layer is then dried to form a SDC electrolyte layer on the ScCeSZ electrolyte layer. The combined anode support, the NiO--ScCeSZ anode functional layer, the ScCeSZ electrolyte layer, and the SDC electrolyte layer is then sintered together. A cathode slurry is then coated onto the SDC electrolyte layer to form a cathode layer. A solid oxide fuel cell is then formed when the combined anode support, the NiO--ScCeSZ anode functional layer, the ScCeSZ electrolyte layer, the SDC electrolyte layer, and the cathode layer is then sintered together.