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:
Dec. 22, 1992
Filed:
Feb. 07, 1992
Applicant:
Inventors:
Youji Matsuo, Kurobe, JP;
Toshio Arai, Toyama, JP;
Assignee:
Yoshida Kogyo K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429 31 ; 429 33 ;
Abstract
The present invention provides a composite material suitable for use as the supporting member for a fuel cell, the composite material comprising (100-A) % by mole of MgO and A % by mole of MgAl.sub.2 O.sub.4 (wherein A is 14 to 64) and having a coefficient of thermal expansion close to that of a electrolyte YSZ, which is used as a solid electrolyte in the fuel cell, and a high thermal conductivity. By using the above supporting member, no cracking occurs in the electrolyte at high temperature during the use thereof and further during the preparation thereof, so that no lowering in the electromotive force occurs.