CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, INCLUDING LITHIUM COBALT OXIDE HAVING CORE-SHELL STRUCTURE, METHOD FOR PREPARING SAME, AND CATHODE AND SECONDARY BATTERY INCLUDING CATHODE ACTIVE MATERIAL

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(11)

EP 3 439 081 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	published in accordance with Art. 153(4) EPC

(15)	Correction information:
	Corrected version no 1 (W1 A1)

(48)	Corrigendum issued on:
	01.05.2019 Bulletin 2019/18

(43)	Date of publication:
	06.02.2019 Bulletin 2019/06

(21)	Application number: 18748698.0

(22)	Date of filing: 26.01.2018

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International Patent Classification (IPC):

H01M 4/36^(2006.01)
H01M 4/485^(2010.01)
H01M 4/131^(2010.01)
C01G 51/00^(2006.01)

H01M 4/525^(2010.01)
H01M 4/505^(2010.01)
H01M 10/052^(2010.01)

(86)	International application number:
	PCT/KR2018/001169

(87)	International publication number:
	WO 2018/143612 (09.08.2018 Gazette 2018/32)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
	Designated Extension States:
	BA ME
	Designated Validation States:
	MA MD TN

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Priority:

31.01.2017 KR 20170013649
31.01.2017 KR 20170013613

(71)	Applicant: LG Chem, Ltd.
	Seoul 07336 (KR)

(72)	Inventors:
	JO, Chi Ho Daejeon 34122 (KR) PARK, Sungbin Daejeon 34122 (KR) PARK, Jiyoung Daejeon 34122 (KR) LEE, Bo Ram Daejeon 34122 (KR) HAN, Jungmin Daejeon 34122 (KR) HUR, Hyuck Daejeon 34122 (KR) JUNG, Wang Mo Daejeon 34122 (KR)

(74)	Representative: Hoffmann Eitle
	Patent- und Rechtsanwälte PartmbB Arabellastraße 30 81925 München 81925 München (DE)

(54)	CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, INCLUDING LITHIUM COBALT OXIDE HAVING CORE-SHELL STRUCTURE, METHOD FOR PREPARING SAME, AND CATHODE AND SECONDARY BATTERY INCLUDING CATHODE ACTIVE MATERIAL

(57) The present invention relates to a positive electrode active material for a lithium secondary battery including a lithium cobalt oxide having a core-shell structure, wherein the lithium cobalt-doped oxide of the core and the lithium cobalt-doped oxide of the shell include each independently three kinds of dopants and satisfy specific conditions, a method for producing the same, and a positive electrode and a secondary battery containing the positive electrode active material.