Back to results
US 7,255,955 B2Granted
Hydrous phosphate catalysts with low platinum
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsKaren Swider Lyons, Peter J Bouwman
Life of this patent
Estimating the term…
Abstract
A device is provided having a cathode capable of catalytically reducing oxygen, an anode capable of catalytically oxidizing hydrogen, and an electrolyte in contact with both the anode and cathode. The cathode and/or anode contain transition-metal phosphates with the formula M1—M2PxOy. zH2O, where M1 is a platinum group metal and M2 is a transition metal.
Claims21
A device comprising:
- a cathode capable of catalytically reducing oxygen;
- an anode capable of catalytically oxidizing hydrogen;
- and
- an electrolyte in contact with both the cathode and the anode;
- wherein the anode, the cathode, or both comprise a phosphate catalyst comprising a mixture of M1 and M2PxOy. zH2O
- wherein M1 is one or more platinum group metals or alloys thereof;
- wherein M2 is a transition metal;
- wherein x and y are positive numbers;
- and
- wherein z is a nonnegative number.
7 more elements
Dependencies are inferred from the claim text.