Title:
CATHODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/224451
Kind Code:
A1
Abstract:
The present invention relates to a cathode active material and a preparation method therefor, the cathode active material comprising; a discrete-particle-type lithium transition metal oxide divided into a surface part and a core; and a cobalt-containing coating part formed on the surface part, wherein the surface part includes an oxidation number gradient layer in which the oxidation number of nickel (Ni) increases in the direction of the outermost side thereof.
Inventors:
LEE EUNG JU (KR)
PARK HYUN AH (KR)
LEE KANG HYEON (KR)
JUNG YONG JO (KR)
KIM JONG PIL (KR)
BAEK HYEON HUI (KR)
PARK HYUN AH (KR)
LEE KANG HYEON (KR)
JUNG YONG JO (KR)
KIM JONG PIL (KR)
BAEK HYEON HUI (KR)
Application Number:
PCT/KR2023/006947
Publication Date:
November 23, 2023
Filing Date:
May 22, 2023
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M4/36; C01G53/00; H01M4/02; H01M4/505; H01M4/525
Foreign References:
| KR20190048923A | 2019-05-09 | |||
| KR102144056B1 | 2020-08-12 | |||
| JP2020525993A | 2020-08-27 | |||
| KR20140108615A | 2014-09-12 |
Other References:
CHEN XI; TANG YU; FAN CHANGLING; HAN SHAOCHANG: "A highly stabilized single crystalline nickel-rich LiNi0.8Co0.1Mn0.1O2 cathode through a novel surface spinel-phase modification", ELECTROCHIMICA ACTA, ELSEVIER, AMSTERDAM, NL, vol. 341, 16 March 2020 (2020-03-16), AMSTERDAM, NL , XP086110955, ISSN: 0013-4686, DOI: 10.1016/j.electacta.2020.136075
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
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