Back to results
US 2010/0304960 A1Published application
Alloy fuel cell catalysts
OwnerTetsuo Kawamura, Lesia Protsailo +1inventors
InventorsTetsuo Kawamura, Lesia Protsailo, Marianne Pemberton
Life of this patent
Estimating the term…
Abstract
Alloy catalysts have the formula of PtXRh, wherein X represents one or two elements from the group consisting of Ti, Mn, Co, V, Cr, Ni, Cu, Zr, Zn, Fe, Ru, Pd, Re, Os, Ir, and Au. These catalysts can be used as electrocatalysts in fuel cells.
Claims15
An alloy catalyst having a formula of PtXRh,
- wherein X represents one or two elements selected from the group consisting of Ti, Mn, Co, V, Cr, Ni, Cu, Zr, Zn, Fe, Ru, Pd, Re, Os, Ir, and Au,
- wherein a molar percentage of the rhodium is between 1 mol % and 10 mol %.
(canceled)
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
A polymer electrolyte fuel cell, comprising:
- a cathode electrocatalyst having a formula of PtXRh,
- wherein X represents one or two elements selected from the group consisting of Ti, Mn, Co, V, Cr, Ni, Cu, Zr, Zn, Fe, Ru, Pd, Re, Os, Ir, and Au, and
- wherein a molar percentage of the rhodium is between 1 mol % and 10 mol %.
A phosphoric acid fuel cell, comprising:
- a cathode electrocatalyst having a formula of PtXRh,
- wherein X represents one or two elements selected from the group consisting of Ti, Mn, Co, V, Cr, Ni, Cu, Zr, Zn, Fe, Ru, Pd, Re, Os, Ir, and Au, and
- wherein a molar percentage of the rhodium is between 1 mol % and 10 mol %.
Dependencies are inferred from the claim text.