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:
Jul. 28, 2026
Filed:
Dec. 20, 2021
Posco Holdings Inc., Seoul, KR;
Research Institute of Industrial Science & Technology, Pohang-si, KR;
Posco Chemical Co., Ltd, Pohang-si, KR;
Gang Ho Lee, Pohang-si, KR;
Jung-Chul An, Pohang-si, KR;
Sei Min Park, Pohang-si, KR;
Jong Hoon Yoon, Pohang-si, KR;
Hyun-Chul Jo, Pohang-si, KR;
POSCO Holdings Inc., Seoul, KR;
RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, Pohang-si, KR;
POSCO CHEMICAL CO., LTD, Pohang-si, KR;
Abstract
It is related to a manufacturing method of a negative electrode active materialfor lithium secondary battery, comprising: preparing an artificial graphite; mixing the artificial graphite and a coal tar to form a coating layer on the artificial graphite; and carbonizing the artificial graphite on which the coating layer is formed, wherein, the artificial graphite has a degree of sphericity of 0.6 to 1; and in the step of preparing an artificial graphite, the artificial graphite contains 20 wt % or more of artificial graphite derived from coal-based coke.