公开(公告)号：US06207311B1

公开(公告)日：2001-03-27

申请号：US09342868

申请日：1999-06-29

申请人： Li Baozhen ,  Roswell J. Ruka ,  Subhash C. Singhal

发明人： Li Baozhen ,  Roswell J. Ruka ,  Subhash C. Singhal

IPC分类号： H01M812

CPC分类号： H01M4/9033 ,  H01M8/0217 ,  H01M8/1253 ,  H01M8/243 ,  H01M2008/1293 ,  H01M2300/0074 ,  Y02E60/525 ,  Y02P70/56

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.

摘要翻译： 公开了具有改进的低温操作的固体氧化物燃料电池。 在一个实施方案中，恐惧稳定的氧化锆的界面层位于固体氧化物燃料电池的空气极和电解质之间。 界面层提供了控制空气电极和电解质之间的相互作用的屏障。 界面层还通过减少空气电极/电解质界面电阻来降低极化损失。 在另一个实施方案中，固体氧化物燃料电池包括具有高导电性的猩猩稳定的氧化锆电解质。 为了降低电阻，可以提供鳞片状氧化锆电解质作为非常薄的层。 猩猩稳定的电解质优选与terbia稳定的界面层组合使用。 与常规燃料电池相比，固体氧化物燃料电池在更宽的温度范围和更宽的温度梯度下可操作。

公开(公告)号：US5993989A

公开(公告)日：1999-11-30

申请号：US826715

申请日：1997-04-07

申请人： Li Baozhen ,  Roswell J. Ruka ,  Subhash C. Singhal

发明人： Li Baozhen ,  Roswell J. Ruka ,  Subhash C. Singhal

IPC分类号： H01M8/02 ,  H01M8/12 ,  H01M8/24 ,  H01M4/86

CPC分类号： H01M4/9033 ,  H01M8/0217 ,  H01M8/1253 ,  H01M8/243 ,  H01M2008/1293 ,  H01M2300/0074 ,  Y02E60/525 ,  Y02P70/56

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.

摘要翻译： 公开了具有改进的低温操作的固体氧化物燃料电池。 在一个实施方案中，恐惧稳定的氧化锆的界面层位于固体氧化物燃料电池的空气极和电解质之间。 界面层提供了控制空气电极和电解质之间的相互作用的屏障。 界面层还通过减少空气电极/电解质界面电阻来降低极化损失。 在另一个实施方案中，固体氧化物燃料电池包括具有高导电性的猩猩稳定的氧化锆电解质。 为了降低电阻，可以提供鳞片状氧化锆电解质作为非常薄的层。 猩猩稳定的电解质优选与terbia稳定的界面层组合使用。 与常规燃料电池相比，固体氧化物燃料电池在更宽的温度范围和更宽的温度梯度下可操作。