公开(公告)号：US20210013493A1

公开(公告)日：2021-01-14

申请号：US16925579

申请日：2020-07-10

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Yungu CHO ,  Doori OH ,  Heeyoung CHU ,  Hyun SOH ,  Yoonyoung CHOI ,  Yubin HWANG

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/134 ,  H01M4/133 ,  H01M10/0525

Abstract: A composite anode active material, an anode, and a lithium secondary battery, the composite anode active material including a silicon-carbon composite; a first graphite; and a second graphite that is different from the first graphite, wherein the first graphite has an average particle diameter D50 of about 10 μm or greater, and the second graphite has an average particle diameter D50 of about 18 μm or greater.

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.