Title:
LITHIUM COBALT-BASED POSITIVE ELECTRODE ACTIVE MATERIAL, METHOD FOR PREPARING SAME, POSITIVE ELECTRODE COMPRISING SAME, AND SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/093864
Kind Code:
A3
Abstract:
The present invention relates to a lithium cobalt-based positive electrode active material, wherein the lithium cobalt-based positive electrode active material comprises: a core part containing a lithium cobalt-based oxide represented by chemical formula 1; and a shell part containing a lithium cobalt-based oxide represented by chemical formula 2. The lithium cobalt-based positive electrode active material contains, relative to the total weight thereof, doping element M at 2500 ppm or more, and preferably 3000 ppm or more. A lithium cobalt-based positive electrode active material, which shows no inflection point in a voltage profile measured by charging and discharging a secondary battery comprising the lithium cobalt-based positive electrode active material, is provided.
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Inventors:
JO CHI HO (KR)
YOU MIN KYU (KR)
PARK SUNG BIN (KR)
HUR HYUCK (KR)
HWANG JIN TAE (KR)
JUNG WANG MO (KR)
YOU MIN KYU (KR)
PARK SUNG BIN (KR)
HUR HYUCK (KR)
HWANG JIN TAE (KR)
JUNG WANG MO (KR)
Application Number:
PCT/KR2018/013822
Publication Date:
June 27, 2019
Filing Date:
November 13, 2018
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M4/36; C01G51/00; H01M4/485; H01M4/525; H01M10/052
Foreign References:
| KR20160040117A | 2016-04-12 | |||
| KR20160039983A | 2016-04-12 | |||
| KR20160040118A | 2016-04-12 | |||
| KR20160149162A | 2016-12-27 | |||
| KR20170103699A | 2017-09-13 |
Other References:
See also references of EP 3680966A4
Attorney, Agent or Firm:
BAE, KIM & LEE IP GROUP (KR)
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