公开(公告)号：US20190181445A1

公开(公告)日：2019-06-13

申请号：US16327244

申请日：2017-09-04

Applicant: Samsung SDI Co., Ltd.

Inventor： Daehoe LEE ,  Dongjin KIM ,  Minhan KIM ,  Ilseok KIM ,  Dohyung PARK ,  Junseok PARK ,  Okgyu LIM ,  Gyuran JEON ,  Jeonjin CHOI

IPC: H01M4/525 ,  C01G53/00 ,  H01M10/0525

Abstract: The present disclosure relates to a cathode active material for a lithium secondary battery, a method for preparing same, and a lithium secondary battery comprising same, the cathode active material comprising a lithium-nickel compound oxide, wherein a c-axis lattice parameter of a unit lattice of the lithium-nickel compound oxide satisfies Formula 1: 14.1720 ÅA≤c≤14.1750 ÅA  [Formula 1]

公开(公告)号：US20180123130A1

公开(公告)日：2018-05-03

申请号：US15795550

申请日：2017-10-27

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Dongjin KIM ,  Minhan KIM ,  Dohyung PARK ,  Young Jin PARK ,  Kyounghyun KIM ,  Ilseok KIM

IPC: H01M4/525 ,  H01M4/36 ,  H01M4/505 ,  H01M4/48 ,  H01M4/131 ,  H01M10/0525 ,  C01G53/00

CPC classification number: H01M4/525 ,  C01G53/50 ,  C01P2002/50 ,  C01P2004/03 ,  C01P2006/40 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/366 ,  H01M4/483 ,  H01M4/505 ,  H01M10/0525

Abstract: A positive active material for a rechargeable lithium battery includes a lithium nickel-based metal oxide represented by LixNi1-yMyO2 and a lithium-containing oxide on a surface of the lithium nickel-based metal oxide. In the formula LixNi1-yMyO2, M is one or more of Co, Mn, Al, Mg, Ti, Zr, or a combination thereof, 0