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Title:
CATHODE ACTIVE MATERIAL PRECURSOR FOR LITHIUM SECONDARY BATTERY, CATHODE ACTIVE MATERIAL, AND CATHODE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2022/124801
Kind Code:
A1
Abstract:
The present invention relates to a secondary particle precursor for a cathode active material, a cathode active material prepared therefrom, a preparation method therefor, and a lithium secondary battery comprising same, wherein: the secondary particle precursor comprises a core part and a shell part; the secondary particle precursor has a particle diameter (D50) of 6±2 ㎛; the particle diameter (D50) of the core part is 1-5 ㎛; and the core part has higher porosity than the shell part. According to an embodiment of the present invention, the cathode active material prepared using the foregoing secondary particle precursor for a cathode active material has an increased rolling density, leading to a reduction in cracking.

Inventors:
JUNG HAE-JUNG (KR)
KIM JI-HYE (KR)
YOO TAE-GU (KR)
JUNG WANG-MO (KR)
JO CHI-HO (KR)
HEO JONG-WOOK (KR)
Application Number:
PCT/KR2021/018559
Publication Date:
June 16, 2022
Filing Date:
December 08, 2021
Export Citation:
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Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
H01M4/525; C01G53/00; H01M4/505; H01M10/052
Foreign References:
KR20200001082A2020-01-06
CN111370679A2020-07-03
KR20150065046A2015-06-12
KR101768374B12017-08-14
CN111653756A2020-09-11
US20190013519A12019-01-10
KR20200170277A2020-12-08
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
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