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/2020/067795

Kind Code:

A1

Abstract:

The present invention relates to a cathode active material for a lithium secondary battery, a preparation method therefor, and a lithium secondary battery comprising same, and the cathode active material comprises secondary particles obtained by granulating at least one primary particle, and comprises a lithium nickel cobalt manganese-based oxide, which is represented by the following chemical formula 1, and metal oxide particles, which have a nano-sized average diameter (D50) and are located inside the secondary particles. [Chemical formula 1] Lia[NixCoyMnz]tM1-tO2-pXp (In chemical formula 1, the definition of each substituent is the same as that in the Detailed Description.)

Inventors:

CHOI KWON YOUNG (KR)
LEE SANG HYUK (KR)
SONG JUNG HOON (KR)
NAM SANG CHEOL (KR)
PARK JONG IL (KR)

Application Number:

PCT/KR2019/012631

Publication Date:

April 02, 2020

Filing Date:

September 27, 2019

Export Citation:

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Assignee:

POSCO (KR)
RES INST IND SCIENCE & TECH (KR)

International Classes:

H01M4/525; C01G25/02; C01G53/00; H01M4/36; H01M4/485; H01M4/505; H01M4/62; H01M10/052

Foreign References:

KR20120114955A	2012-10-17
JP2013114786A	2013-06-10
KR20180064295A	2018-06-14
KR20100097222A	2010-09-02
JP2011113792A	2011-06-09

Other References: