Solid oxide fuel cell with lanthanum-gallate oxide and...

Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Fuel cell with solid electrolyte

Reexamination Certificate

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C429S479000, C429S486000

Reexamination Certificate

active

07851103

ABSTRACT:
A solid oxide fuel cell which has high output capacity especially at an operating temperature of 600° C.-800° C. and effectively prevents influence of reaction between respective layers. The solid oxide fuel cell includes a solid electrolyte layer between a fuel electrode and an air electrode, a support comprised of either the fuel electrode or the air electrode, and at least first and second layers provided in turn from the side of the support. The first layer is comprised of a cerium-containing oxide and the second layer is comprised of a lanthanum-gallate oxide containing at least lanthanum and gallate. A sintering assistant for improving sintering property of the cerium-containing oxide is contained in the first layer. When the thickness of the second layer is T μm, the value of T is 2<T<70.

REFERENCES:
patent: 6893762 (2005-05-01), Sarkar et al.
patent: 11-335164 (1999-12-01), None
patent: 2002-015756 (2002-01-01), None
patent: 2003-173802 (2003-06-01), None
Gong, Wenquan, et al.. “Materials Systems for Intermediate-Temperature (600-800° C.) SOFCs Based on Doped Lanthanum-Gallate Electrolyte.” Journal of the Electrochemical Society, 152 (9) A1890-A1895 (2005).
Bi, Zhonghe; Wang, Z.; Dong,Y.; Wu, H.; She,Y.; Cheng,M., A High-Performance Anode-Supported SOFC with LDC-LSGM Bilayer Electrolytes, Electrochemical and Solid-State Letters, 7 (5) A105-A107 (2004), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.

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