Supported catalyst, method for preparing the same, cathode...

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Inorganic carbon containing

Reexamination Certificate

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C502S101000, C502S182000, C502S185000, C420S461000, C420S462000, C420S463000, C420S464000, C420S466000, C420S468000, C420S507000, C420S512000, C429S400000, C429S479000, C429S484000, C429S485000, C429S487000, C429S523000, C429S524000, C429S525000, C429S526000, C429S527000

Reexamination Certificate

active

07875569

ABSTRACT:
A supported catalyst includes a carbonaceous catalyst support and first metal-second metal alloy catalyst particles adsorbed on the surface of the carbonaceous catalyst support, wherein the difference between a D10 value and a D90 value is in the range of 0.1 to 10 nm, wherein the D10 value is a mean diameter of a randomly selected 10 wt % of the first metal-second metal alloy catalyst particles and the D90 value is a mean diameter of a randomly selected 90 wt % of the alloy catalyst particles. The supported catalyst has excellent membrane efficiency in electrodes for fuel cells due to uniform alloy composition of a catalyst particle and supported catalysts that do not agglomerate.

REFERENCES:
patent: 6686308 (2004-02-01), Mao et al.
patent: 6797667 (2004-09-01), Ruth et al.
patent: 7037873 (2006-05-01), Kato
patent: 7150866 (2006-12-01), Wieland et al.
patent: 7381682 (2008-06-01), Jia et al.
patent: 7589043 (2009-09-01), Yoo et al.
patent: 2006/0094597 (2006-05-01), Goia et al.
patent: 10-2007-0004416 (2008-06-01), None
Office Action issued on Oct. 26, 2007 by the Korean Intellectual Property Office for Korean Patent Application No. 2007-4416.

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