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:
Dec. 18, 2018
Filed:
May. 09, 2014
W. L. Gore & Associates, Co., Ltd., Tokyo, JP;
W.L. Gore & Associates, Co., Ltd., Tokyo, JP;
Abstract
The present invention addresses the problem of providing: a core-shell catalyst capable of achieving, when evaluated for a fuel cell, the catalytic activity anticipated from the catalyst activity value obtained using a rotating disc electrode (RDE); and a method for activating a core-shell catalyst in said manner. The present invention relates to a fuel cell catalyst, which is an electrode catalyst having a core-shell structure and is characterized in that at least 99% of the core member is covered by the shell member and the halogen content is not more than 5000 ppm. The present invention also relates to a method for activating said core-shell catalyst, the method comprising: a process for dispersing the core-shell catalyst in a dispersion solvent; a process for separating impurities from said core-shell catalyst by blowing a gas that has reducing properties or a mixed gas comprising same into said dispersion solvent; and a process for removing said impurities.