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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7910512 B1

PDFFull Text
Date of Patent:
Mar. 22, 2011

Filed:

Sep. 26, 2008

Production process of electrode catalyst for fuel cell

Applicants:

Hiroaki Takahashi, Toyota, JP;

Sozaburo Ohashi, Nagoya, JP;

Tetsuo Kawamura, Toyota, JP;

Yousuke Horiuchi, Toyota, JP;

Toshiharu Tabata, Kakegawa, JP;

Tomoaki Terada, Kakegawa, JP;

Takahiro Nagata, Kakegawa, JP;

Susumu Enomoto, Kakegawa, JP;

Inventors:

Hiroaki Takahashi, Toyota, JP;

Sozaburo Ohashi, Nagoya, JP;

Tetsuo Kawamura, Toyota, JP;

Yousuke Horiuchi, Toyota, JP;

Toshiharu Tabata, Kakegawa, JP;

Tomoaki Terada, Kakegawa, JP;

Takahiro Nagata, Kakegawa, JP;

Susumu Enomoto, Kakegawa, JP;

Assignee:

Cataler Corporation, Shizuoka-ken, JP;

Attorney:

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Primary Examiner:

Patricia L Hailey

Int. Cl.
CPC ...
H01M 4/88 (2006.01); B01J 21/18 (2006.01); B01J 23/00 (2006.01); B01J 23/40 (2006.01); B01J 23/74 (2006.01); B01J 23/42 (2006.01); B01J 23/44 (2006.01); C22C 38/00 (2006.01); C22C 38/16 (2006.01); C22C 38/20 (2006.01); C22C 38/42 (2006.01); C22C 38/18 (2006.01); C22C 38/08 (2006.01); C22C 38/14 (2006.01); C22C 38/12 (2006.01); C22C 14/00 (2006.01); C22C 27/02 (2006.01); C22C 27/06 (2006.01); C22C 22/00 (2006.01); C22C 19/03 (2006.01); C22C 9/00 (2006.01); C22C 18/00 (2006.01); C22C 5/04 (2006.01); C22C 9/04 (2006.01); C22C 9/06 (2006.01); C22C 9/05 (2006.01); C22C 18/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

To provide a production process of an electrode catalyst for fuel cell whose initial voltage is high and whose endurance characteristics, especially, whose voltage drop being caused by high-potential application is less. A production process according to the present invention of an electrode catalyst for fuel cell is characterized in that: it includes: a dispersing step of dispersing a conductive support in a solution; a loading step of dropping a platinum-salt solution, a base-metal-salt solution and an iridium-salt solution to the resulting dispersion liquid, thereby loading respective metallic salts on the conductive support as hydroxides under an alkaline condition; and an alloying step of heating the conductive support with metallic hydroxides loaded in a reducing atmosphere to reduce them, thereby alloying them.

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