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. 14, 2016
Filed:
Dec. 02, 2011
Tomoyuki Tada, Kanagawa, JP;
Koichi Matsutani, Kanagawa, JP;
Takeshi Kaieda, Kanagawa, JP;
Katsuichiro Hayakawa, Kanagawa, JP;
Hitoshi Nakajima, Kanagawa, JP;
Tomoyuki Tada, Kanagawa, JP;
Koichi Matsutani, Kanagawa, JP;
Takeshi Kaieda, Kanagawa, JP;
Katsuichiro Hayakawa, Kanagawa, JP;
Hitoshi Nakajima, Kanagawa, JP;
TANAKA KIKINZOKU KOGYO K.K, Tokyo, JP;
Abstract
The present invention provides a catalyst for a polymer electrolyte fuel cell including catalyst particles made of platinum supported on a carbon powder carrier, wherein the carbon powder carrier includes 0.7 to 3.0 mmol/g (based on the weight of the carrier) of a hydrophilic group bonded thereto; and the platinum particles have an average particle size of 3.5 to 8.0 nm and the platinum specific surface area based on CO adsorption (COMSA) of 40 to 100 m/g. The catalyst for a polymer electrolyte fuel cell according to the present invention is a catalyst excellent in initial activity and satisfactory in durability.