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Title: Electrocatalyst for oxygen reduction with reduced platinum oxidation and dissolution rates

Patent ·
OSTI ID:1080419

The invention relates to platinum-metal oxide composite particles and their use as electrocatalysts in oxygen-reducing cathodes and fuel cells. The invention particularly relates to methods for preventing the oxidation of the platinum electrocatalyst in the cathodes of fuel cells by use of these platinum-metal oxide composite particles. The invention additionally relates to methods for producing electrical energy by supplying such a fuel cell with an oxidant, such as oxygen, and a fuel source, such as hydrogen.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-98CH10886
Assignee:
Brookhaven Science Associates, LLC (Upton, NY)
Patent Number(s):
8,308,989
Application Number:
13/033,764
OSTI ID:
1080419
Country of Publication:
United States
Language:
English

References (5)

Electrocatalytic Activity of Cubic Sodium Tungsten Bronze journal January 1981
Modeling oxide-metal interfaces from density-functional theory: Platinum adsorption on tetragonal zirconia journal November 2003
Tungsten bronze fuel cell catalysts journal January 1968
Self-Assembling Solid Oxide Fuel Cell Materials:  Mesoporous Yttria-Zirconia and Metal-Yttria-Zirconia Solid Solutions journal September 2000
Surface Composition Effects in Electrocatalysis:  Kinetics of Oxygen Reduction on Well-Defined Pt 3 Ni and Pt 3 Co Alloy Surfaces journal November 2002