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. 23, 2008
Filed:
Jul. 23, 2004
Olga A. Marina, Richland, WA (US);
Larry R. Pederson, Richland, WA (US);
Olga A. Marina, Richland, WA (US);
Larry R. Pederson, Richland, WA (US);
Battelle Memorial Institute, Richland, WA (US);
Abstract
An anode and method of making the same wherein the anode consists of two separate phases, one consisting of a doped strontium titanate phase and one consisting of a doped cerium oxide phase. The strontium titanate phase consists of SrMTiO, where M is either yttrium (Y), scandium (Sc), or lanthanum (La), where 'x' may vary typically from about 0.01 to about 0.5, and where δ is indicative of some degree of oxygen non-stoichiometry. A small quantity of cerium may also substitute for titanium in the strontium titanate lattice. The cerium oxide consists of NCeO, where N is either niobium (Nb), vanadium (V), antimony (Sb) or tantalum (Ta) and where 'y' may vary typically from about 0.001 to about 0.1 and wherein the ratio of Ti in said first phase to the sum of Ce and N in the second phase is between about 0.2 to about 0.75. Small quantities of strontium, yttrium, and/or lanthanum may additionally substitute into the cerium oxide lattice. The combination of these two phases results in better performance than either phase used separately as an anode for solid oxide fuel cell or other electrochemical device.