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:
Sep. 02, 2008
Filed:
Sep. 29, 2003
George D. Vernstrom, Inver Grove Heights, MN (US);
Radoslav Atanasoski, Edina, MN (US);
Mark K. Debe, Stillwater, MN (US);
Gregory M. Haugen, Edina, MN (US);
Krzysztof A. Lewinski, Oakdale, MN (US);
Andrew J. L. Steinbach, Minneapolis, MN (US);
George D. Vernstrom, Inver Grove Heights, MN (US);
Radoslav Atanasoski, Edina, MN (US);
Mark K. Debe, Stillwater, MN (US);
Gregory M. Haugen, Edina, MN (US);
Krzysztof A. Lewinski, Oakdale, MN (US);
Andrew J. L. Steinbach, Minneapolis, MN (US);
3M Innovative Properties Company, Saint Paul, MN (US);
Abstract
A fuel cell cathode catalyst is provided which comprises nanostructured elements comprising microstructured support whiskers bearing nanoscopic catalyst particles. The nanoscopic catalyst particles are made by the alternating application of first and second layers, the first layer comprising platinum and the second layer being an alloy or intimate mixture of iron and a second metal selected from the group consisting of Group VIb metals, Group VIIb metals and Group VIIIb metals other than platinum and iron, where the atomic ratio of iron to the second metal in the second layer is between 0 and 10, where the planar equivalent thickness ratio of the first layer to the second layer is between 0.3 and 5, and wherein the average bilayer planar equivalent thickness of the first and second layers is less than 100 Å.