发明名称 |
AIR ELECTRODE COMPOSITION FOR SOLID OXIDE FUEL CELL |
摘要 |
An air electrode composition for a solid oxide fuel cell is disclosed. The air electrode (14) material is based on lanthanum manganite having a perovskite-like crystal structure ABO3. The A-site of the air electrode composition comprises a mixed lanthanide in combination with rare earth and alkaline earth dopants. The B-site of the composition comprises Mn in combination with dopants such as Mg, Al, Cr and Ni. The mixed lanthanide comprises La, Ce, Pr and, optionally, Nd. The rare earth A-site dopants preferably comprise La, Nd or a combination thereof, while the alkaline earth A-site dopant preferably comprises Ca. The use of a mixed lanthanide substantially reduces raw material costs in comparison with compositions made from high purity lanthanum starting materials. The amount of the A-site and B-site dopants is controlled in order to provide an air electrode composition having a coefficient of thermal expansion which closely matches that of the other components of the solid oxide fuel cell. |
申请公布号 |
WO9933134(A1) |
申请公布日期 |
1999.07.01 |
申请号 |
WO1998US26613 |
申请日期 |
1998.12.14 |
申请人 |
SIEMENS WESTINGHOUSE POWER CORPORATION |
发明人 |
KUO, LEWIS;RUKA, ROSWELL, J.;SINGHAL, SUBHASH |
分类号 |
C04B35/00;C04B35/01;H01M4/86;H01M4/88;H01M4/90;H01M8/02;H01M8/12 |
主分类号 |
C04B35/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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