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:
Jul. 19, 2022
Filed:
Jun. 29, 2018
Nippon Steel Chemical & Material Co., Ltd., Tokyo, JP;
Takashi Iijima, Tokyo, JP;
Kenichiro Tadokoro, Tokyo, JP;
Masataka Hiyoshi, Tokyo, JP;
Shinya Furukawa, Tokyo, JP;
Tomoko Komura, Tokyo, JP;
Kazuhiko Mizuuchi, Tokyo, JP;
NIPPON STEEL CHEMICAL & MATERIAL CO., LTD., Tokyo, JP;
Abstract
A support for a polymer electrolyte fuel cell catalyst satisfying the following requirements (A), (B), (C), and (D), and a producing method thereof, as well as a catalyst layer for a polymer electrolyte fuel cell and a fuel cell: (A) a specific surface area according to a BET analysis of a nitrogen adsorption isotherm is from 450 to 1500 m/g. (B) a nitrogen adsorption and desorption isotherm forms a hysteresis loop in a range of relative pressure P/Pof more than 0.47 but not more than 0.90, and a hysteresis loop area ΔSis from 1 to 35 mL/g; (C) a relative pressure P/Pat which the hysteresis loop closes is more than 0.47 but not more than 0.70; and (D) a half-width of a G band detected by Raman spectrometry in a range of from 1500 to 1700 cmis from 45 to 75 cm.