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:
Nov. 24, 2009
Filed:
Oct. 12, 2005
Mark K. Debe, Stillwater, MN (US);
Susan M. Hendricks, Cottage Grove, MN (US);
George D. Vernstrom, Inver Grove Heights, MN (US);
Alison K. Schmoeckel, Stillwater, MN (US);
Radoslav Atanasoski, Edina, MN (US);
Clayton V. Hamilton, Jr., Woodbury, MN (US);
Mark K. Debe, Stillwater, MN (US);
Susan M. Hendricks, Cottage Grove, MN (US);
George D. Vernstrom, Inver Grove Heights, MN (US);
Alison K. Schmoeckel, Stillwater, MN (US);
Radoslav Atanasoski, Edina, MN (US);
Clayton V. Hamilton, Jr., Woodbury, MN (US);
3M Innovative Properties Company, Saint Paul, MN (US);
Abstract
A fuel cell cathode catalyst is provided comprising nanostructured elements comprising microstructured support whiskers bearing nanoscopic catalyst particles; wherein the catalyst comprises platinum and manganese and at least one other metal selected from the group consisting of Group VIb metals, Group VIIb metals and Group VIIIb metals other than platinum and manganese; wherein the volume ratio of platinum to the sum of all other metals in the catalyst is between about 1 and about 4 and wherein the Mn content is equal to or greater than about 5 micrograms/cm2 areal density. Typically, the volume ratio of manganese to the at least one other metal is between 10:90 and 90:10. Typically, the at least one other metal is Ni or Co. In addition, a fuel cell MBA comprising the present cathode catalyst is provided. In addition, methods of making the present cathode catalyst are provided.