发明名称 |
Interfacial material for solid oxide fuel cell |
摘要 |
Solid oxide fuel cells having improved low-temperature operation are disclosed. In one embodiment, an interfacial layer of terbia-stabilized zirconia is located between the air electrode and electrolyte of the solid oxide fuel cell. The interfacial layer provides a barrier which controls interaction between the air electrode and electrolyte. The interfacial layer also reduces polarization loss through the reduction of the air electrode/electrolyte interfacial electrical resistance. In another embodiment, the solid oxide fuel cell comprises a scandia-stabilized zirconia electrolyte having high electrical conductivity. The scandia-stabilized zirconia electrolyte may be provided as a very thin layer in order to reduce resistance. The scandia-stabilized electrolyte is preferably used in combination with the terbia-stabilized interfacial layer. The solid oxide fuel cells are operable over wider temperature ranges and wider temperature gradients in comparison with conventional fuel cells.
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申请公布号 |
US5993989(A) |
申请公布日期 |
1999.11.30 |
申请号 |
US19970826715 |
申请日期 |
1997.04.07 |
申请人 |
SIEMENS WESTINGHOUSE POWER CORPORATION |
发明人 |
BAOZHEN, LI;RUKA, ROSWELL J.;SINGHAL, SUBHASH C. |
分类号 |
H01M8/02;H01M8/12;H01M8/24;(IPC1-7):H01M8/12;H01M4/86 |
主分类号 |
H01M8/02 |
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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