LITHIUM COMPOSITE OXIDE, AND CATHODE ACTIVE MATERIAL FOR SECONDARY BATTERY, COMPRISING SAME

Title:

LITHIUM COMPOSITE OXIDE, AND CATHODE ACTIVE MATERIAL FOR SECONDARY BATTERY, COMPRISING SAME

Document Type and Number:

WIPO Patent Application WO/2024/096209

Kind Code:

A1

Abstract:

A cathode active material of the present invention comprises a lithium nickel-based composite oxide comprising secondary particles formed by the aggregation of primary particles, wherein some cations and some anions in the lithium nickel-based composite oxide are replaced by a cation M' and a fluoride anion (F-), respectively, which are contained in a fluorine-based compound, and the average Ni occupancy in the Li 3a site, obtained through Rietveld refinement using X-ray diffraction of the secondary particles, is 1.1-1.5%.

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Inventors:

HAN KYU SUK (KR)
CHOI JIN HYEOK (KR)
SHIN JAE HOON (KR)
LEE SEUL GI (KR)

Application Number:

PCT/KR2023/005794

Publication Date:

May 10, 2024

Filing Date:

April 27, 2023

Export Citation:

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Assignee:

ECOPRO BM CO LTD (KR)

International Classes:

H01M4/525; H01M4/02; H01M4/131; H01M4/36; H01M4/505; H01M10/052

Foreign References:

KR20190124078A	2019-11-04
KR20130129449A	2013-11-28
KR20210067842A	2021-06-08
KR20080105637A	2008-12-04

Other References:

WANG HUA, HASHEM AHMED M., ABDEL-GHANY ASHRAF E., ABBAS SOMIA M., EL-TAWIL RASHA S., LI TIANYI, LI XINTONG, EL-MOUNAYRI HAZIM, TOV: "Effect of Cationic (Na+) and Anionic (F−) Co-Doping on the Structural and Electrochemical Properties of LiNi1/3Mn1/3Co1/3O2 Cathode Material for Lithium-Ion Batteries", INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES, MOLECULAR DIVERSITY PRESERVATION INTERNATIONAL (MDPI), BASEL, CH, vol. 23, no. 12, Basel, CH , pages 6755, XP093148427, ISSN: 1422-0067, DOI: 10.3390/ijms23126755

Attorney, Agent or Firm:

ECM IP & LAW FIRM (KR)

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