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:
Sep. 13, 2011
Filed:
Aug. 28, 2007
Jae-young Choi, Suwon-si, KR;
Chan-ho Pak, Seoul, KR;
Seok-gwang Doo, Seoul, KR;
Jeong-hee Lee, Seongnam-si, KR;
Young-hee Lee, Suwon-si, KR;
Kay-hyeok an, Suwon-si, KR;
Sung-jin Kim, Seoul, KR;
Jae-young Choi, Suwon-si, KR;
Chan-ho Pak, Seoul, KR;
Seok-gwang Doo, Seoul, KR;
Jeong-hee Lee, Seongnam-si, KR;
Young-hee Lee, Suwon-si, KR;
Kay-hyeok An, Suwon-si, KR;
Sung-jin Kim, Seoul, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
Carbon nanotubes have an R value of at least 1.3, where R is defined as the ratio (I/I) of an integral value of D band intensity (I) to an integral value of G band intensity (I) in the Raman spectrum. Such carbon nanotubes can be used to form a support catalyst with good catalyst activity because the surface defects on the carbon nanotubes promote improved catalyst distribution in that the support catalyst includes catalyst particles having a small mean particle size and a slight variation in particle size. Such a support catalyst has particularly useful properties when used as a catalyst layer for a fuel cell electrode.