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：US20170133672A1

公开(公告)日：2017-05-11

申请号：US15342671

申请日：2016-11-03

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Yumi SONG ,  Mingzi HONG ,  Gyuran JEON ,  Dohyung PARK ,  Minhan KIM ,  Joongho MOON

IPC: H01M4/36 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/04 ,  H01M4/505 ,  H01M10/42

CPC classification number: H01M4/366 ,  C01G53/006 ,  C01G53/50 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/628 ,  H01M10/0525 ,  H01M10/4235 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2220/20

Abstract: A positive electrode active material includes a lithium composite oxide and a zirconium oxide coating layer and a lithium zirconium oxide coating layer that are in a form of sequential layers on the lithium composite oxide.