Title:
SINGLE CRYSTAL MULTI-ELEMENT POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR, AND LITHIUM ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/169064
Kind Code:
A1
Abstract:
A single crystal multi-element positive electrode material and a preparation method therefor, and a lithium ion battery. The ratio of the length of the longest diagonal line to the length of the shortest diagonal line of the single crystal particles of the single crystal multi-element positive electrode material measured by an SEM is roundness R, and R ≥ 1; and D 10, D 50 and D 90 of the single crystal particles of the single crystal multi-element positive electrode material satisfy: K 90 = (D 90-D 10)/D 50, and the product of K 90 and R is 1.20-1.40. The single crystal multi-element positive electrode material is more round and regular in morphology, the single crystal particles have uniform size, less agglomeration and less adhesion. The material has the characteristics of high compaction density, good rate capability and excellent cycle performance.
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Inventors:
HU YISENG (CN)
LI SHANSHAN (CN)
SONG SHUNLIN (CN)
LIU YAFEI (CN)
CHEN YANBIN (CN)
LI SHANSHAN (CN)
SONG SHUNLIN (CN)
LIU YAFEI (CN)
CHEN YANBIN (CN)
Application Number:
PCT/CN2022/144086
Publication Date:
September 14, 2023
Filing Date:
December 30, 2022
Export Citation:
Assignee:
BEIJING EASPRING MAT TECH CO LTD (CN)
International Classes:
C30B29/22; C30B1/10; H01M4/36
Foreign References:
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| CN113620352A | 2021-11-09 | |||
| CN114843502A | 2022-08-02 | |||
| CN112301428A | 2021-02-02 | |||
| CN115332530A | 2022-11-11 | |||
| CN110697787A | 2020-01-17 | |||
| CN115084506A | 2022-09-20 | |||
| CN114703544A | 2022-07-05 | |||
| US20210143423A1 | 2021-05-13 | |||
| US20220285676A1 | 2022-09-08 | |||
| US20210126242A1 | 2021-04-29 |
Attorney, Agent or Firm:
RUNPING & PARTNERS (CN)
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