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]