公开(公告)号：US20210265662A1

公开(公告)日：2021-08-26

申请号：US17255169

申请日：2019-06-11

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Soojin KIM ,  Pavel SHATUNOV ,  Sangjae PARK ,  Hyerim LEE

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/0568

Abstract: This disclosure relates to an electrolyte for a lithium secondary battery and a lithium secondary battery including the same.
For example, the electrolyte for a lithium secondary battery includes a non-aqueous organic solvent, a lithium salt, and an additive, wherein the additive includes at least one borate-based lithium salt selected from lithium tetrafluoroborate (LiBF4), lithium bis(oxalate)borate (LiBOB), lithium difluoro(oxalato)borate (LiFOB), lithium bis(2-methyl-2-fluoro-malonato)borate, and a combination thereof; and a compound represented by Chemical Formula 1.
The detailed description of Chemical Formula 1 is the same as that defined in the specification.

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.