Fuel cell nanocatalyst

Details Fuel cell nanocatalyst Fuel cell nanocatalyst

2005-10-12

2009-11-24

Ryan, Patrick (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Having earth feature

C502S101000

Reexamination Certificate

active

07622217

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.

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