Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Electrode structure or composition
Reexamination Certificate
2011-03-01
2011-03-01
Dove, Tracy (Department: 1726)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Electrode structure or composition
C429S525000, C429S527000, C429S528000, C429S530000
Reexamination Certificate
active
07897293
ABSTRACT:
A chemical composition is provided having the formula:in-line-formulae description="In-line Formulae" end="lead"?M—SnOx.yH2Oin-line-formulae description="In-line Formulae" end="tail"?M is a platinum group metal and x and y are positive numbers. The hydrous platinum tin oxide may be used in the cathode of a fuel cell as a catalyst for oxygen reduction.
REFERENCES:
patent: 5922487 (1999-07-01), Watanabe et al.
Hawley's Condensed Chemical Dictionary, 11thedition, pp. 611 and 349-350, 1987.
Gardner et al, “Characterization Study of Silica-Supported Platinized Tin Oxide Catalysts Used for Low-Temperature CO Oxidation: Effect of Pretreatment Temperature”, The Journal of Physical Chemistry, 1991, pp. 835-838, vol. 95, No. 2. American Chemical Society.
Katayama et al, “Electrooxidation of Methanol on a Platinum-Tin Oxide Catalyst”, The Journal of Physical Chemistry, 1980, pp. 376-381, vol. 84, No. 4, American Chemical Society.
Ugarte et al, “Low-Platinum Tin-Oxide Electrocatalyst for Pem Fuel Cell Cathodes”, 202nd Electrochemical Society Meeting, Oct. 20-25, 2002, Salt Lake City.
Ugarte et al, “Low-Platinum Tin-Oxide Electrocatalyst for Pem Fuel Cell Cathodes”, 202nd Electrochemical Society Meeting, Oct. 20-25, 2002, Salt Lake City, UT.
Swider-Lyons et al, “Low-Platinum Hydrous Metal Oxides for PEMFC Cathodes”, NRL DOE review, May 19, 2003, pp. 1-5.
Watanabe et al., “Preparation of Dispersed Platinum on Conductive Tin Oxide and Its Catalytic Activity for Oxygen Reduction,” J. Electrochem. Soc., 130(1). (Jan. 1983).
Lyons Karen S.
Ugarte Norma P.
Dove Tracy
Grunkemeyer Joseph T.
Ressing Amy L.
The United States of America as represented by the Secretary of
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