公开(公告)号：US20200287215A1

公开(公告)日：2020-09-10

申请号：US16809460

申请日：2020-03-04

Applicant: Samsung SDI Co., Ltd.

Inventor： Young-Ki KIM ,  Jungjoon PARK ,  Soonrewl LEE ,  Youngjoo CHAE ,  Ickkyu CHOI ,  Mingzi HONG ,  Soonkie HONG

IPC: H01M4/525 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/04 ,  H01M4/1391

Abstract: A positive active material for a rechargeable lithium battery includes a first compound represented by Chemical Formula 1, and a second compound having a smaller particle diameter than the first compound and represented by Chemical Formula 2, wherein the first compound and the second compound have a Ni content of about 50 at % to about 60 at % based on a total amount of metal elements excluding Li. A rechargeable lithium battery including the first compound and the second compound satisfies Relation 1: Vs

公开(公告)号：US20190148726A1

公开(公告)日：2019-05-16

申请号：US16192729

申请日：2018-11-15

Applicant: Samsung SDI Co., Ltd.

Inventor： Youngjoo CHAE ,  Kitae KIM ,  Young-Ki KIM ,  Jungjoon PARK ,  Dong-Hwan YU ,  Soonrewl LEE ,  Hyerim LEE ,  Ickkyu CHOI ,  Soonkie HONG ,  Kisoo LEE

IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/505

Abstract: A positive active material for a rechargeable lithium battery, and a rechargeable lithium battery and a battery module including the same are provided. The positive active material may include a lithium nickel-manganese-cobalt composite oxide with a coating layer on the surface. The coating layer on the surface may include a lithium oxide including Al and/or W, for example, Al and W.