Title:
CATHODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/224443
Kind Code:
A1
Abstract:
The present invention relates to a discrete-particle-type cathode active material and a preparation method therefor, the material comprising: a discrete-particle-type lithium transition metal oxide; a coating part which is formed on the discrete-particle-type lithium transition metal oxide and which comprises cobalt; and island-shaped LiCoO2 discontinuously formed on the surface thereof, wherein the ratio of the intensity of a peak (550 cm-1 to 620 cm-1) corresponding to the A1g vibration mode of LiCoO2 to the intensity of a peak (500 cm-1 to 600 cm-1) corresponding to the A1g vibration mode of LiNiO2 in the Raman spectrum of the surface is greater than 1.
Inventors:
JUNG WON SIG (KR)
BAEK HYEON HUI (KR)
KIM SANG JUN (KR)
KIM JONG PIL (KR)
PARK HYUN AH (KR)
LEE KANG HYEON (KR)
RHEE TAE YOUNG (KR)
BAEK HYEON HUI (KR)
KIM SANG JUN (KR)
KIM JONG PIL (KR)
PARK HYUN AH (KR)
LEE KANG HYEON (KR)
RHEE TAE YOUNG (KR)
Application Number:
PCT/KR2023/006939
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:
| KR102144056B1 | 2020-08-12 | |||
| KR102084689B1 | 2020-05-29 | |||
| KR20160064881A | 2016-06-08 | |||
| KR20210058490A | 2021-05-24 |
Other References:
LI LUYU, HU GUORONG, CAO YANBING, PENG ZHONGDONG, ZHANG XIANG, ZHANG SHUAI, DU KE: "Enhanced electrochemical performance and structural stability at high Cut-off voltage of monocrystalline LiNi0.65Co0.07Mn0.28O2 cathode material via Nano-sized Co(OH)2 coating", APPLIED SURFACE SCIENCE, ELSEVIER, AMSTERDAM , NL, vol. 586, 1 June 2022 (2022-06-01), Amsterdam , NL , pages 152794, XP093110658, ISSN: 0169-4332, DOI: 10.1016/j.apsusc.2022.152794
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
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