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Solid oxide fuel cell components and method of manufacture thereof

United States Patent Application

20040018409
A1
View the Complete Application at the US Patent & Trademark Office
A solid oxide fuel cell comprises a dense electrolyte disposed between a porous anode and a porous cathode wherein the dense electrolyte comprises doped lanthanum gallate or yttria stabilized zirconia, the porous anode comprises yttrium-doped strontium titanate, yttrium-doped strontium titanate and nickel, lanthanum-doped ceria and nickel or yttria stabilized zirconia and nickel and the porous cathode comprises doped lanthanum ferrite or strontium-doped lanthanum manganite. The fuel cell may further comprise an interlayer(s) comprising lanthanum-doped ceria disposed between an electrode (anode, cathode or both) and the electrolyte. An interconnect layer comprising doped lanthanum chromate may be disposed between the anode of a first single fuel cell and the cathode of a second single fuel cell. The anode, cathode, electrolyte and optional interlayer(s) are produced by thermal spray.
Hui, Shiqiang (Storrs, CT), Ma, Xinqing (Storrs, CT), Zhang, Heng (Storrs, CT), Chen, Huimin (Storrs, CT), Roth, Jeffrey (Conventry, CT), Broadhead, John (Holland, MA), DeCarmine, Anthony (Lebanon, CT), Dai, Jinxiang (Mansfield, CT), Xiao, Danny T. (Willington, CT)
10/ 377,253
February 28, 2003
[0002] This invention was made with Government support under grant DE-FG 02-01ER83340 awarded by the Department of Energy. The Government has certain rights in the invention.