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:
Nov. 17, 2015
Filed:
Apr. 27, 2010
Yasuaki Wakizaka, Chiba, JP;
Takuya Imai, Chiba, JP;
Toshikazu Shishikura, Chiba, JP;
Ryuji Monden, Chiba, JP;
Kenichiro Ota, Koganei, JP;
Yasuaki Wakizaka, Chiba, JP;
Takuya Imai, Chiba, JP;
Toshikazu Shishikura, Chiba, JP;
Ryuji Monden, Chiba, JP;
Kenichiro Ota, Koganei, JP;
SHOWA DENKO K.K., Tokyo, JP;
Abstract
The invention provides catalysts that are not corroded in acidic electrolytes or at high potential and have excellent durability and high oxygen reducing ability. The catalyst includes a metal element M, carbon, nitrogen and oxygen, wherein the catalyst shows peaks at 1340 cmto 1365 cmand at 1580 cmto 1610 cmas analyzed by Raman spectroscopy and the metal element M is one selected from titanium, iron, niobium, zirconium and tantalum. The catalysts of the invention are stable and are not corroded in acidic electrolytes or at high potential, have high oxygen reducing ability and are inexpensive compared to platinum. Fuel cells having the catalysts are therefore relatively inexpensive and have high performance.