Electrocatalyst compositions
AssigneesThe Penn State Research Foundation, Illinois Institute of Technology
InventorsThomas E. Mallouk, Benny C. Chan, Erik Reddington, Anthony Sapienza, Guoying Chen, Eugene Smotkin, Bogdan Gurau, Rameshkrishnan Viswanathan, Renxuan Liu
Life of this patent
Estimating the term…
Abstract
Compositions for use as catalysts in electrochemical reactions are described. The compositions are alloys prepared from two or more elemental metals selected from platinum, molybdenum, osmium, ruthenium, rhodium, and iridium. Also described are electrode compositions including such alloys and electrochemical reaction devices including such catalysts.
Claims14
A catalyst for use in an electrochemical reactor device, said catalyst comprising an alloy comprising a first metal selected from the group consisting of platinum and ruthenium, and at least two additional metals selected from the group consisting of rhodium, iridium, and osmium.
A catalyst for use in an electrochemical reactor device, said catalyst comprising an alloy that comprises at least four different metals, said metals being selected from the group consisting of platinum, rhodium, ruthenium, iridium, and osmium.
A catalyst for use in an electrochemical reactor device, said catalyst comprising an alloy consisting essentially of a plurality of metals, said metals being selected from platinum, rhodium, ruthenium, iridium, and osmium, wherein said catalyst is an anode and said alloy comprises platinum in an atomic percent greater than about 11 and less than about 44, and one or more other metals selected from rhodium, ruthenium, and iridium.
A catalyst for use in an electrochemical reactor device, said catalyst comprising an alloy consisting essentially of a plurality of metals, said metals being selected from platinum, rhodium, ruthenium, iridium, and osmium, wherein said catalyst is a cathode and said alloy comprises ruthenium in an atomic percent greater than about 11 and less than about 88, and one or more other metals selected from rhodium, platinum, osmium, and iridium.
A cathode comprising an alloy, said alloy being selected from the group consisting of:
- (a) Pt(3.5)Ru(2)Os(2.5)Ir(1);
- and
- (b) Rh(4)Pt(2.5)Ru(1.5)Ir(1).
Dependencies are inferred from the claim text.