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/2022/114824
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, a cathode active material can be provided that contains a secondary particle with improved resistance through the increase in average particle diameter (D50) of primary macroparticles as well as the increase in crystal size. According to an embodiment of the present invention, a cathode active material with high particle density can be provided. Therefore, a nickel-based cathode active material with improved lifespan and resistance characteristics can be provided through the securing of migration routes of lithium ions and the minimization of defects of a crystalline structure of the cathode active material.
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Inventors:
KIM JI-HYE (KR)
YOO TAE-GU (KR)
JUNG WANG-MO (KR)
JUNG HAE-JUNG (KR)
JO CHI-HO (KR)
HEO JONG-WOOK (KR)
YOO TAE-GU (KR)
JUNG WANG-MO (KR)
JUNG HAE-JUNG (KR)
JO CHI-HO (KR)
HEO JONG-WOOK (KR)
Application Number:
PCT/KR2021/017565
Publication Date:
June 02, 2022
Filing Date:
November 25, 2021
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
H01M4/525; C01G53/00; H01M4/36; H01M4/505; H01M4/62; H01M10/052
Foreign References:
| KR20190059249A | 2019-05-30 | |||
| KR20150010556A | 2015-01-28 | |||
| JP2020087858A | 2020-06-04 | |||
| KR20180121267A | 2018-11-07 | |||
| KR20150065046A | 2015-06-12 | |||
| KR20170084230A | 2017-07-19 | |||
| KR20200159518A |
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
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