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.:
Date of Patent:
Jun. 10, 2014
Filed:
Feb. 28, 2008
Shigeru Konishi, Annaka, JP;
Shigeru Konishi, Annaka, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
This invention provides a process for producing an electrode catalyst for a fuel cell, comprising a first support step of producing metallic fine particles having an average particle diameter of 0.1 to 1.5 nm provided at regulated particle intervals on an electroconductive carbon carrier, and a second support step of growing a metal identical to or dissimilar to the metal using the metallic fine particles as a nucleus. In the first support step, the metallic fine particles are supported by an immersion method. The above constitution can provide an electrode catalyst for a fuel cell, which has a high level of percentage support, has a high level of dispersibility, and has improved methanol oxidation activity per weight of the catalyst. Further, when treatment in an atmosphere containing hydrogen is carried out at a low temperature below 100° C., the methanol oxidation activity per active surface area can be improved without lowering the active area.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile