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:
Oct. 09, 2012
Filed:
Sep. 21, 2011
Jeong-hee Lee, Yongin-si, KR;
Jae-young Choi, Yongin-si, KR;
Chan-ho Pak, Yongin-si, KR;
Eun-ju Ra, Seoul, KR;
Young-hee Lee, Seoul, KR;
Kay-hyeok an, Seoul, KR;
Jeong-hee Lee, Yongin-si, KR;
Jae-young Choi, Yongin-si, KR;
Chan-ho Pak, Yongin-si, KR;
Eun-ju Ra, Seoul, KR;
Young-hee Lee, Seoul, KR;
Kay-hyeok An, Seoul, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
Provided is a carbon nanofiber, wherein the carbon nanofiber has a surface oxygen content of at least 0.03 calculated by the formula: Oxygen content=[atomic percentage of oxygen/atomic percentage of carbon] using atomic percentages of oxygen and carbon, respectively calculated from an area of an oxygen peak having a binding energy of 524 to 540 eV, an area of a nitrogen peak having a binding energy of 392 to 404 eV, and an area of a carbon peak having a binding energy of 282 to 290 eV in X-ray photoelectron spectroscopy. The nanofibers have high surface oxygen content and may have metal catalyst nano particles densely and uniformly distributed on the outer wall of the carbon nanofibers, thereby having high electrochemical efficiency.