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:
Apr. 06, 2010
Filed:
Mar. 15, 2005
Gilles Robert, Zurich, CH;
Andreas Franz-josef Kaiser, Roskilde, DK;
Emad Batawi, Mountain View, CA (US);
Gilles Robert, Zurich, CH;
Andreas Franz-Josef Kaiser, Roskilde, DK;
Emad Batawi, Mountain View, CA (US);
Hexis AG, Winterthur, CH;
Abstract
Anode material for a fuel cell which is to be operated at a high temperature above 700° C., which anode material is a porous composite material with a heterogeneous phase of solid materials which is formed by two reticular systems which penetrate each other in interlaced manner of particles connected by sintering, namely a first reticular system of ceramic material, and also a second reticular system of metallic material for the purpose of bringing about redox processes and an electrical conductivity, characterized in that the first reticular system is composed of large and small ceramic particles () with average diameters dgreater than 5 μm or smaller than 1 μm respectively, in that 50% to 80% of the first reticular system is formed from the large ceramic particles (), and in that a composition of the anode material to be used is given by values which are selected by means of samples of this material and a test method, wherein the test method includes at least one redox cycle, an irreversible change in length of the selected sample adopting in this a value smaller than 0.002, preferably smaller than 0.0005, and the following measurements and evaluations being carried out per redox cycle at a temperature which is at least the same as the operating temperature of the fuel cell: