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:
May. 08, 2001
Filed:
Dec. 08, 1998
Applicant:
Inventors:
Jai-Woh Kim, Salt Lake City, UT (US);
Kuan-Zong Fung, Tainan, TW;
Anil V. Virkar, Salt Lake City, UT (US);
Assignee:
The University of Utah Research Foundation, Salt Lake City, UT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/88 ;
U.S. Cl.
CPC ...
H01M 4/88 ;
Abstract
The present invention concerns a high power density solid oxide fuel cell having a cathode, electrolyte and graded porous anode. The graded porosity of the anode allows easy transport of fuel gases thereby minimizing concentration polarization. Power densities of about 1.8 W/cm,at 800° C. and about 0.8 W/cm,at about 650° C. have been achieved with graded porous anodes as thick as 0.75 mm. These fuel cells having a graded porous anode are more durable and mechanically reliable than those found in the art.