Title:
NEGATIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR, SECONDARY BATTERY AND ELECTRIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/065737
Kind Code:
A1
Abstract:
The present application relates to a negative electrode active material. The negative electrode active material comprises a core structure and a shell structure arranged on the surface of the core structure, wherein holes are formed in both the core structure and the shell structure, and the average pore size of the holes in the shell structure is larger than the average pore size of the holes in the core structure. The negative electrode active material of the present application also has good dynamic performance under the condition of a high compaction density. When the negative electrode active material is used in a battery, the energy density of the battery can be improved, and the purpose of rapid charging can be achieved. The present application further relates to a preparation method for the negative electrode active material, a secondary battery and an electric device.
Inventors:
ZENG CHEN (CN)
KANG MENG (CN)
HE LIBING (CN)
KANG MENG (CN)
HE LIBING (CN)
Application Number:
PCT/CN2022/123417
Publication Date:
April 04, 2024
Filing Date:
September 30, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/36; H01M4/583; H01M10/0525
Foreign References:
| CN109301225A | 2019-02-01 | |||
| US20180151876A1 | 2018-05-31 | |||
| CN109585803A | 2019-04-05 | |||
| CN101529624A | 2009-09-09 | |||
| US20210202941A1 | 2021-07-01 |
Attorney, Agent or Firm:
BEIJING CHEN QUAN INTELLECTUAL PROPERTY LAW FIRM (CN)
Download PDF:
Previous Patent: VOLTAGE DETECTION DEVICE
Next Patent: LIGHT-EMITTING SUBSTRATE, MANUFACTURING METHOD THEREFOR, AND DISPLAY APPARATUS
Next Patent: LIGHT-EMITTING SUBSTRATE, MANUFACTURING METHOD THEREFOR, AND DISPLAY APPARATUS