公开(公告)号：US20190157671A1

公开(公告)日：2019-05-23

申请号：US16194006

申请日：2018-11-16

Applicant: Samsung SDI Co., Ltd.

Inventor： Young-Hun LEE ,  Hyunjei CHUNG ,  Yongmok CHO ,  Yoonyoung CHOI ,  Ickkyu CHOI

IPC: H01M4/525 ,  H01M10/0525

Abstract: A positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The positive active material for a rechargeable lithium battery may include a compound represented by Chemical Formula 1: Li1+x1Co1-x2-x3-x4M1x2M2x3M3x4O2.   Chemical Formula 1 In Chemical Formula 1, 0 0.01; M1 may be selected from Mg, Na, Ca, and a combination thereof; M2 may be selected from Al, B, Fe, and a combination thereof; and M3 may be selected from Ti, Zr, V, Cr, Mo, W, Mn, Ni, Cu, Ag, Zn, Si, Sn, N, P, S, F, Cl, and a combination thereof.

公开(公告)号：US20220367860A1

公开(公告)日：2022-11-17

申请号：US17815427

申请日：2022-07-27

Applicant: Samsung SDI Co., Ltd.

Inventor： Yongmok CHO ,  Young-Hun LEE ,  Hyunjei CHUNG

IPC: H01M4/36 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/48

Abstract: A positive active material for a rechargeable lithium battery includes: a core having a layered structure; and a surface layer on at least one portion of the surface of the core and including an oxide, wherein the oxide includes at least one first element and at least one second element each selected from Ti, Zr, F, Mg, Al, P, and a combination thereof, the first element and the second element being different from one another, the first element included in the positive active material in an amount of about 0.01 mol % to about 0.2 mol % based on a total weight of the positive active material, and the second element included in the positive active material in an amount of about 0.02 mol % to about 0.5 mol % based on a total weight of the positive active material. A rechargeable lithium battery includes the positive active material.

公开(公告)号：US20190214639A1

公开(公告)日：2019-07-11

申请号：US16243594

申请日：2019-01-09

Applicant: Samsung SDI Co., Ltd.

Inventor： Yongmok CHO ,  Young-Hun LEE ,  Hyunjei CHUNG

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

CPC classification number: H01M4/366 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028

Abstract: A positive active material for a rechargeable lithium battery includes: a core having a layered structure; and a surface layer on at least one portion of the surface of the core and including an oxide, wherein the oxide includes at least one first element and at least one second element each selected from Ti, Zr, F, Mg, Al, P, and a combination thereof, the first element and the second element being different from one another, the first element included in the positive active material in an amount of about 0.01 mol % to about 0.2 mol % based on a total weight of the positive active material, and the second element included in the positive active material in an amount of about 0.02 mol % to about 0.5 mol % based on a total weight of the positive active material. A rechargeable lithium battery includes the positive active material.