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

Title:

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

Document Type and Number:

WIPO Patent Application WO/2019/164313

Kind Code:

A1

Abstract:

The present invention relates to a positive electrode active material for a secondary battery, the positive electrode active material comprising: a lithium composite transition metal oxide containing nickel (Ni), cobalt (Co), and at least one selected from the group consisting of manganese (Mn) and aluminum (Al); and a composite coating portion formed on the particle surface of the lithium composite transition metal oxide, wherein the lithium composite transition metal oxide has a nickel (Ni) content of 65 mol% or more in the total content of transition metals therein; and the composite coating portion contains cobalt (Co), boron (B), and at least one selected from the group consisting of lanthanum (La), titanium (Ti), and aluminum (Al).

Inventors:

KIM WON TAE (KR)
YU JONG YEOL (KR)
PARK HONG KYU (KR)
SHIN SUN SIK (KR)
KANG SEONG HOON (KR)

Application Number:

PCT/KR2019/002165

Publication Date:

August 29, 2019

Filing Date:

February 21, 2019

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

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

Foreign References:

KR20150063955A	2015-06-10
KR20150050458A	2015-05-08
KR20170103662A	2017-09-13
JP3582161B2	2004-10-27
KR20170081950A	2017-07-13

Other References: