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:
Mar. 08, 2022
Filed:
Aug. 21, 2019
Samsung Sdi Co., Ltd., Yongin-si, KR;
Soonkie Hong, Yongin-si, KR;
Young-Ki Kim, Yongin-si, KR;
Soonrewl Lee, Yongin-si, KR;
Young-Hun Lee, Yongin-si, KR;
Jiyeon Jang, Yongin-si, KR;
Ickkyu Choi, Yongin-si, KR;
Mingzi Hong, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
A positive active material for use in a positive electrode and a rechargeable lithium battery includes a lithium cobalt oxide including a secondary particle having an average particle diameter of about 15 μm to about 25 μm, wherein the secondary particle includes a plurality of primary particles having an average particle diameter of about 2 μm to about 10 μm, and the positive active material has a pellet density of greater than or equal to about 3.80 g/cm. A method of manufacturing the positive active material includes heat-treating a cobalt-containing compound at a temperature of greater than or equal to about 900° C. to form a cobalt oxide comprising CoOand CoO, and reacting the cobalt oxide with a lithium compound to prepare the lithium cobalt oxide.