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US 2010/0304268 A1Published application
Ternary alloy catalysts for fuel cells
OwnerTetsuo Kawamura, Lesia Protsailoinventors
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Abstract
Alloy catalysts have the formula of PtiIrjXk, wherein X represents an element from the group consisting of Ti, Mn, Co, V, Cr, Ni, Cu, Zr, Zn, and Fe. These catalysts can be used as electrocatalysts in fuel cells.
Claims13
An alloy catalyst having a formula of PtiIrjXk,
- wherein X is an element selected from the group consisting of Ti, Mn, Co, V, Cr, Ni, Cu, Zr, Zn, and Fe, i is between 40 mol % and 60 mol %, j is between 5 mol % and 20 mol %, and k is between 30 mol % and 50 mol %.
A method of synthesizing an alloy catalyst having multiple metal elements, comprising:
- mixing one or more of water soluble compounds of the multiple metal elements with a catalyst support material in water to form an aqueous mixture;
- adding a reducing agent selected from the group consisting of hydrazine, sodium borohydride, formic acid, and formaldehyde to the aqueous mixture;
- evaporating the liquid in the aqueous mixture to obtain a solid material;
- and
- calcining the solid material in an inert atmosphere at 600-1000° C. for 0.5-5 hrs.
2 more elements
Dependencies are inferred from the claim text.