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:
Apr. 17, 2018
Filed:
Apr. 14, 2014
Catalyst and electrode catalyst layer, membrane electrode assembly, and fuel cell using the catalyst
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Nippon Steel & Sumikin Chemical Co., Ltd., Tokyo, JP;
Ken Akizuki, Nishitokyo, JP;
Atsushi Ohma, Yokohama, JP;
Tetsuya Mashio, Yokohama, JP;
Yoshitaka Ono, Yokohama, JP;
Shinichi Takahashi, Miura-gun, JP;
NISSAN MOTOR CO., LTD., Yokohama-shi, JP;
NIPPON STEEL & SUMIKIN CHEMICAL CO., LTD., Tokyo, JP;
Abstract
The present invention has an object to provide a catalyst having excellent oxygen reduction reaction activity. The present invention relates to a catalyst comprising a catalyst support and a catalyst metal supported on the catalyst support, wherein a specific surface area of the catalyst per support weight is 715 m/g support or more or a covering ratio of the catalyst metal with an electrolyte is less than 0.5, and an amount of an acidic group of the catalyst per support weight is 0.75 mmol/g support or less.