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:
Nov. 21, 2017
Filed:
Sep. 21, 2012
Korea Electronics Technology Institute, Seongnam-si, Gyeonggi-do, KR;
Jun Ho Song, Seongnam-si, KR;
Young Jun Kim, Yongin-si, KR;
Jae-Hun Kim, Yongin-si, KR;
Kyoung Joon Lee, Seoul, KR;
Min-Woo Lee, Ansan-si, KR;
KOREA ELECTRONICS TECHNOLOGY INSTITUTE, Seongnam-si, Gyeonggi-Do, KR;
Abstract
A method of preparing a positive active material for a lithium secondary battery represented by the following Chemical Formula 1 (LiNiCoMnMO) includes: (a) preparing a metal salt aqueous solution including a lithium raw material, a manganese raw material, a nickel raw material, and a cobalt raw material; (b) wet-pulverizing the metal salt aqueous solution using beads having a particle diameter of 0.05 to 0.30 mm at 2000 to 6000 rpm for 2 to 12 hours to prepare a slurry; (c) adding a carbon source to the slurry; (d) spray-drying the slurry of the step (c) to prepare a mixed powder; and (e) heat-treating the mixed powder.