Ultralow loading fuel cell catalyst
AssigneeNissan North America, Inc.
InventorsTAEHEE HAN, ELLAZAR V. NIANGAR, NILESH DALE
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Abstract
Disclosed herein are embodiments of ultralow loading catalyst. Also disclosed are membrane electrode assemblies and fuel cells utilizing the ultralow loading catalyst. One embodiment of an ultralow loading catalyst includes support particles comprised of a non-precious metal catalyst material and precious metal particles supported on the support particles.
Claims28
An ultralow loading catalyst comprising:
- a support particle comprised of a carbon-nitrogen-transition metal network having a first set of active sites;
- and
- precious metal particles supported on the support particle and having a second set of active sites.
(canceled)
A membrane electrode assembly comprising:
- an ultralow loading catalyst having catalyst particles comprising:
- a support particle comprised of a carbon-nitrogen-transition metal network having a first set of active sites;
- and
- precious metal particles supported on the support particle having a second set of active sites.
(canceled)
A fuel cell comprising a plurality of membrane electrode assemblies each comprising:
- an ultralow loading catalyst having catalyst particles comprising:
- a support particle comprised of a carbon-nitrogen-transition metal network having a first set of active sites;
- and
- precious metal particles supported on the support particle and having a second set of active sites.
(canceled)
(canceled)
An ultralow loading catalyst having catalyst particles comprising:
- a support particle comprised of a carbon-nitrogen-transition metal network having a diameter equal to or greater than one micron;
- and
- precious metal particles supported on the support particle having a diameter between 2 and 10 nanometers.
Dependencies are inferred from the claim text.