Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Sulfur or compound containing same
Reexamination Certificate
2006-05-31
2010-12-14
Cantelmo, Gregg (Department: 1795)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Sulfur or compound containing same
C429S523000, C429S524000, C429S526000
Reexamination Certificate
active
07851399
ABSTRACT:
A method of making an electrode catalyst material using aqueous solutions. The electrode catalyst material includes a support comprising at least one transition metal and at least one chalcogen disposed on a surface of the transition metal. The method includes reducing a metal powder, mixing the metal powder with an aqueous solution containing at least one inorganic compound of the chalcogen to form a mixture, and providing a reducing agent to the mixture to form nanoparticles of the electrode catalyst. The electrode catalyst may be used in a membrane electrode assembly for a fuel cell.
REFERENCES:
patent: 2002/0102451 (2002-08-01), Acker et al.
patent: 2004/0096728 (2004-05-01), Campbell
patent: 2006/0105210 (2006-05-01), Surampudi et al.
Zelenay et al., “Chalcogen Catalysts for Polymer Electrolyte Fuel Cell,” U.S. Appl. No. 11/295,361, filed Dec. 5, 2005.
Alonso-Vante et al., “The Structure Analysis of the Active Center of Ru-Containing Electrocatalysts for the Oxygen Reduction. An In Situ EXAFS Study,” Electrochimica Acta 47 (2002) 3807-3814.
Solorza-Feria et al., “Novel Low-Temperature Synthesis of Semicnducting Transition Metal Chalcogenide electrocatalyst for Multielectron Charge Transfer: molecular Oxygen Reduction,” Electrochimica Acta, vol. 39, No. 11/12, pp. 1647-1653, (1994).
Malakhov, et al., “In Situ EXAFS Study to Probe Active Centers of Ru Chalcogenide Electrocatalysts During Oxygen Reduction Reaction,” J. Phys. Chem. B 2002, 106, 1670-1676.
Zhang et al., “Progress in Preparation of Non-Noble Electrocatalysts for PEM Fuel Cell Reactions,” Journal of Power Sourcesxxx(2005)xxx-xxx.
Cao Dianxue
Choi Jong-Ho
Wieckowski Andrzej
Zelenay Piotr
Cantelmo Gregg
Jones Juliet A.
Los Alamos National Security LLC
Santandrea Robert P.
LandOfFree
Method of making chalcogen catalysts for polymer electrolyte... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of making chalcogen catalysts for polymer electrolyte..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making chalcogen catalysts for polymer electrolyte... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4230776