Title:
POSITIVE ELECTRODE ACTIVE MATERIAL HAVING SURFACE PORTION DOPED WITH HETERO ELEMENTS, AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2020/256473
Kind Code:
A1
Abstract:
The present invention pertains to: a positive electrode active material precursor containing first secondary particles composed of a group of a plurality of first primary particles, the positive electrode active material precursor including a first central portion represented by chemical formula 1 and a first surface portion represented by chemical formula 2, wherein the thickness of the first surface portion is 2-20% of the average radius of the positive electrode active material precursor; and a positive electrode active material containing the positive electrode active material precursor.
Inventors:
SUN YANG-KOOK (KR)
Application Number:
PCT/KR2020/007976
Publication Date:
December 24, 2020
Filing Date:
June 19, 2020
Export Citation:
Assignee:
IUCF HYU (KR)
International Classes:
H01M4/525; C01G53/00; H01M4/36; H01M4/485; H01M10/052
Foreign References:
| KR20160149162A | 2016-12-27 | |||
| KR20190008156A | 2019-01-23 | |||
| KR101555594B1 | 2015-10-06 |
Other References:
SUN GANG, YIN XUCAI, YANG WU, SONG AILING, JIA CHENXIAO, YANG WANG, DU QINGHUA, MA ZHIPENG, SHAO GUANGJIE: "The effect of cation mixing controlled by thermal treatment duration on electrochemistry stability of lithium transition-metal oxide", PHYSICAL CHEMISTRY CHEMICAL PHYSICS, vol. 19, no. 44, 17 October 2017 (2017-10-17), pages 29886 - 29894, XP055775834
YOON, C. S. ET AL.: "Cation Ordering of Zr-Doped LiNi02 Cathode for Lithium-Ion Batteries", CHEM. MATER., vol. 30, no. 5, 2018, pages 1808 - 1814, XP055653882, DOI: 10.1021/acs.chemmater.8b00619
YOON, C. S. ET AL.: "Cation Ordering of Zr-Doped LiNi02 Cathode for Lithium-Ion Batteries", CHEM. MATER., vol. 30, no. 5, 2018, pages 1808 - 1814, XP055653882, DOI: 10.1021/acs.chemmater.8b00619
Attorney, Agent or Firm:
CHOI, Hoon-Sik (KR)
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