Solid oxide fuel cell

Details Solid oxide fuel cell Solid oxide fuel cell

2006-04-25

2006-04-25

Alejandro, Raymond (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000

Reexamination Certificate

active

07033690

ABSTRACT:
The objective of the present invention is to provide a solid oxide fuel cell which has an improved efficiency with a solid electrolyte layer having an improved ionic conductivity, while maintaining the partition wall function; In order to attain this object, the present invention provides a solid oxide fuel cell comprising an air electrode layer, a fuel electrode layer, and a solid electrolyte layer interposed between said air electrode layer and said fuel electrode layer, wherein said solid electrolyte layer comprises a first electrolyte layer which is made of a lanthanide-gallate oxide and has a first ionic transference number and a first total electric conductivity, and a second electrolyte layer which is made of a lanthanide-gallate oxide and has a second ionic transference number smaller than said first ionic transference number and a second total electric conductivity larger than said first total electric conductivity; said air electrode layer is laminated onto one side of said solid electrolyte layer; and said fuel electrode layer is laminated onto the other side of said solid electrolyte layer.

REFERENCES:
patent: 6287716 (2001-09-01), Hashimoto et al.
patent: 199 49 431 (2000-04-01), None
patent: 11-335164 (1999-07-01), None
patent: 11-228136 (1999-08-01), None
European Search Report dated Nov. 4, 2004.

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