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. 08, 2019
Filed:
Dec. 23, 2016
Lg Chem, Ltd., Seoul, KR;
Hee Won Choi, Daejeon, KR;
Sang Wook Woo, Daejeon, KR;
Dong Sub Jung, Daejeon, KR;
Dong Hyuk Kim, Daejeon, KR;
Eun Kyung Kim, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
The present invention relates to a negative electrode active material for a lithium secondary battery, which includes (A) first artificial graphite having an average particle diameter (D50) of 15 μm to 20 μm and (B) second artificial graphite having an average particle diameter (D50) of 3 μm to 5 μm, wherein the first artificial graphite (A) includes a secondary artificial graphite particle, in which at least one primary artificial graphite particle is agglomerated, and a carbon coating layer, and a weight ratio of the first artificial graphite to the second artificial graphite is in a range of 85:15 to 95:5, a negative electrode including the same, and a lithium secondary battery including the negative electrode.