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:
Dec. 24, 2024
Filed:
Nov. 02, 2023
Samsung Sdi Co., Ltd., Yongin-si, KR;
Hee Seon Choi, Yongin-si, KR;
Deok-Hyun Kim, Yongin-si, KR;
Yurim Cha, Yongin-si, KR;
Narae Kim, Yongin-si, KR;
SAMSUNG SDI CO., LTD., Yongin-si, KR;
Abstract
A negative active material for a rechargeable lithium battery and a rechargeable lithium battery that includes the negative active material. The negative active material includes a first active material, which includes tertiary particles of natural graphite in which secondary particles are agglomerated. Primary particles are agglomerated and spheroidized in the secondary particles. Artificial graphite is positioned on a surface of the primary particles and a surface of the secondary particles. An amorphous carbon coating layer surrounds the tertiary particles of natural graphite. Further, the negative active material includes a second active material, which includes a carbon-based material having an aspect ratio of about 2 to about 100.