Title:
POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, PREPARATION METHOD THEREFOR, AND POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY CONTAINING SAME
Document Type and Number:
WIPO Patent Application WO/2024/039227
Kind Code:
A1
Abstract:
The present invention relates to a positive electrode active material for a lithium secondary battery, comprising a particle-shaped lithium transition metal oxide and a surface layer having a thickness of 10 nm to 100 nm provided on the surface of the lithium-transition metal oxide, wherein: the surface layer comprises carbon nanotubes provided in a three-dimensional reticular form and an organic compound physically attached to the carbon nanotubes; the carbon nanotubes are connected in a reticular form on the surface of the lithium transition metal oxide, forming a mutual electrical network; at least a portion of the carbon nanotubes are spaced apart to provide space in the thickness direction of the surface layer; and 100 parts by weight of the carbon nanotubes contains 30 to 90 parts by weight of the organic compound.
Inventors:
KIM YOUNG-JUN (KR)
LEE JUNG-HUN (KR)
KOO JIN-KYO (KR)
SHIN JEONG-MIN (KR)
LEE JUNG-HUN (KR)
KOO JIN-KYO (KR)
SHIN JEONG-MIN (KR)
Application Number:
PCT/KR2023/012289
Publication Date:
February 22, 2024
Filing Date:
August 18, 2023
Export Citation:
Assignee:
CORENERGY SOLUTION CO LTD (KR)
RESEARCH & BUSINESS FOUND SUNGKYUNKWAN UNIV (KR)
RESEARCH & BUSINESS FOUND SUNGKYUNKWAN UNIV (KR)
International Classes:
H01M4/36; H01M4/02; H01M4/04; H01M4/131; H01M4/1391; H01M4/525; H01M4/62; H01M4/66
Domestic Patent References:
| WO2021184534A1 | 2021-09-23 |
Foreign References:
| KR20220100240A | 2022-07-15 | |||
| JP2019149356A | 2019-09-05 |
Other References:
CHEN ZILING, ZHANG QIAN, LIANG QIJIE: "Carbon-Coatings Improve Performance of Li-Ion Battery", NANOMATERIALS, MDPI, vol. 12, no. 11, 6 June 2022 (2022-06-06), pages 1936, XP093140033, ISSN: 2079-4991, DOI: 10.3390/nano12111936
YU JIANLIN, LI HAOHUA, ZHANG GUOQING, LI XINXI, HUANG JIN, LI CHENGFEI, WEI CHAO, XIAO CHANGREN: "Carbon Nanotubes Coating on LiNi0.8Co0.15Al0.05O2 as Cathode Materials for Lithium Battery", INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE, ELECTROCHEMICAL SCIENCE GROUP, SERBIA, vol. 12, no. 12, 1 December 2017 (2017-12-01), Serbia , pages 11892 - 11903, XP093058891, ISSN: 1452-3981, DOI: 10.20964/2017.12.04
YU JIANLIN, LI HAOHUA, ZHANG GUOQING, LI XINXI, HUANG JIN, LI CHENGFEI, WEI CHAO, XIAO CHANGREN: "Carbon Nanotubes Coating on LiNi0.8Co0.15Al0.05O2 as Cathode Materials for Lithium Battery", INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE, ELECTROCHEMICAL SCIENCE GROUP, SERBIA, vol. 12, no. 12, 1 December 2017 (2017-12-01), Serbia , pages 11892 - 11903, XP093058891, ISSN: 1452-3981, DOI: 10.20964/2017.12.04
Attorney, Agent or Firm:
CHOI, Hoon-Sik (KR)
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