The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 24, 2010
Filed:
Oct. 09, 2003
Kazuo Hata, Suita, JP;
Norikazu Aikawa, Himeji, JP;
Kazuo Hata, Suita, JP;
Norikazu Aikawa, Himeji, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
The present invention provides electrolyte sheets for solid oxide fuel cells, the electrolyte sheets being able to improve their adhesion to electrode films formed on both surfaces thereof and being also able to improve electric power generation characteristics of fuel cells by an increase in their electrode reaction areas. There is disclosed an electrolyte sheet for solid oxide fuel cells including a sintered sheet, wherein surface roughness of the sheet as measured by an optical and laser-based non-contact three-dimensional profile measuring system is 2.0 to 20 μm in Rz and 0.20 to 3.0 μm in Ra, and wherein a ratio of Rz of one surface (having a greater Rz and a greater Ra) to Rz of the other surface having a smaller Rz and a smaller Ra is in a range of 1.0 to 3.0, and a ratio of Ra of one surface (having a greater Rz and a greater Ra) to Ra of the other surface having a smaller Rz and a smaller Ra is in a range of 1.0 to 3.0, and a ratio of Rmax to Rz (Rmax/Rz ratio) of at least one surface is in a range of 1.0 to 2.0.