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. 08, 2015
Filed:
Jun. 21, 2011
DO Young Seung, Daejeon, KR;
Sang Ick Lee, Daejeon, KR;
Tae Hyun Jeon, Daejeon, KR;
Ki Joo Hong, Daejeon, KR;
Ung Ju Lee, Daejeon, KR;
Dong Shin Kim, Daejeon, KR;
Do Young Seung, Daejeon, KR;
Sang Ick Lee, Daejeon, KR;
Tae Hyun Jeon, Daejeon, KR;
Ki Joo Hong, Daejeon, KR;
Ung Ju Lee, Daejeon, KR;
Dong Shin Kim, Daejeon, KR;
GS CALTEX CORPORATION, Seoul, KR;
Abstract
The present invention relates to a negative electrode active material for an electrode mixture, and to an electrochemical cell comprising the negative electrode active material, wherein the negative electrode active material comprises an amorphous carbonaceous material and a doping element, and exhibits, in the temperature range of 450° C. to 950° C., at least two peaks of derivative weight change calculated by thermogravimetric analysis, and exhibits a maximum heat peak output of 20 mW to 60 mW as measured by differential scanning calorimetry.