CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, PREPARATION METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Title:

CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, PREPARATION METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Document Type and Number:

WIPO Patent Application WO/2022/114872

Kind Code:

A1

Abstract:

The present invention relates to a cathode active material comprising at least one secondary particle containing an aggregate of primary macroparticles, a preparation method therefor, and a lithium secondary battery comprising same. According to an embodiment of the present invention, the electrical conductivity of the surface of the cathode active material can be improved by coating the surface of the secondary particle with a conductive carbon material. Therefore, a nickel-based cathode active material with improved lifespan performance can be provided through the minimization of the loss of a conductive network after cycles.

Inventors:

DO JOONG-YEOP (KR)
LHO EUN-SOL (KR)
PARK KANG-JOON (KR)
HAN GI-BEOM (KR)
KWAK MIN (KR)
PARK SANG-MIN (KR)
LEE DAE-JIN (KR)
LEE SANG-WOOK (KR)
JUNG WANG-MO (KR)

Application Number:

PCT/KR2021/017685

Publication Date:

June 02, 2022

Filing Date:

November 26, 2021

Export Citation:

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Assignee:

LG ENERGY SOLUTION LTD (KR)

International Classes:

H01M4/36; C01G53/00; H01M4/505; H01M4/525; H01M4/62; H01M10/052

Foreign References:

KR20190059249A	2019-05-30
KR20100081954A	2010-07-15
KR20150065046A	2015-06-12
KR101785262B1	2017-10-16
KR20150099219A	2015-08-31
KR20200163238A	2020-11-27

Other References: