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:
Aug. 19, 2014
Filed:
Nov. 25, 2009
Seong-bae Kim, Incheon, KR;
Woo-seong Kim, Gyeonggi-do, KR;
Ki-sup Song, Seoul, KR;
Ji-jun Hong, Seoul, KR;
Sung-tae Ko, Chungcheongnam-do, KR;
Yoon-jeong Heo, Chungcheongnam-do, KR;
Seong-Bae Kim, Incheon, KR;
Woo-Seong Kim, Gyeonggi-do, KR;
Ki-Sup Song, Seoul, KR;
Ji-Jun Hong, Seoul, KR;
Sung-Tae Ko, Chungcheongnam-do, KR;
Yoon-Jeong Heo, Chungcheongnam-do, KR;
Daejung EM Co., Ltd., Incheon, KR;
Kokam Co., Ltd., Siheung, Gyeonggki-Do, KR;
Abstract
Disclosed are a cathode active material for lithium secondary batteries, a method for preparing the same, and lithium secondary batteries comprising the same. The cathode active material for lithium secondary batteries comprises a lithium metal oxide secondary particle core formed by aggregation of a plurality of lithium metal oxide primary particles; a first shell formed by coating the surface of the secondary particle core with a plurality of barium titanate particles and a plurality of metal oxide particles; and a second shell formed by coating the surface of the first shell with a plurality of olivine-type lithium iron phosphate oxide particles and a plurality of conductive material particles. The cathode active material for lithium secondary batteries allows manufacture of lithium secondary batteries having excellent thermal stability, high-temperature durability and overcharge safety.