Title:
NEGATIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/130335
Kind Code:
A1
Abstract:
The present application provides a negative electrode active material and a preparation method therefor. The negative electrode active material is a self-embedded graphite consisting of graphite A and graphite B; the surface of the graphite A has a tenon structure, and the surface of the graphite B has a mortise structure; the tenon structure of the graphite A and the mortise structure of the graphite B are embedded with each other, and a hydrogen bond is formed between the tenon structure of the graphite A and the mortise structure of the graphite B. By means of the negative electrode active material of the present application, a high adhesive force can be obtained with a small amount of adhesive during electrode preparation, so that a secondary battery having excellent battery dynamics performance, storage performance and cycle performance can be obtained.
Inventors:
DENG BAIDA (CN)
KANG MENG (CN)
ZENG CHEN (CN)
HE LIBING (CN)
KANG MENG (CN)
ZENG CHEN (CN)
HE LIBING (CN)
Application Number:
PCT/CN2022/070617
Publication Date:
July 13, 2023
Filing Date:
January 07, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/587; H01M4/36
Domestic Patent References:
| WO2021239063A1 | 2021-12-02 |
Foreign References:
| CN107408698A | 2017-11-28 | |||
| CN113646927A | 2021-11-12 | |||
| CN113363446A | 2021-09-07 | |||
| CN111403705A | 2020-07-10 | |||
| CN108886137A | 2018-11-23 | |||
| JP2013030355A | 2013-02-07 |
Other References:
WU, YAN ET AL.: "Enhancing the Li-Ion Storage Performance of Graphite Anode Material Modified by Lialo2", ELECTROCHIMICA ACTA, vol. 235, 19 March 2017 (2017-03-19), XP029970292, ISSN: 0013-4686, DOI: 10.1016/j.electacta.2017.03.129
SHIM, JAE-HYUN ET AL.: "Characterization of Graphite Etched with Potassium Hydroxide and Its Application in Fast-Rechargeable Lithium Ion Batteries", JOURNAL OF POWER SOURCES, vol. 324, 31 May 2016 (2016-05-31), XP029624624, ISSN: 0378-7753, DOI: 10.1016/j.jpowsour.2016.05.094
SHIM, JAE-HYUN ET AL.: "Characterization of Graphite Etched with Potassium Hydroxide and Its Application in Fast-Rechargeable Lithium Ion Batteries", JOURNAL OF POWER SOURCES, vol. 324, 31 May 2016 (2016-05-31), XP029624624, ISSN: 0378-7753, DOI: 10.1016/j.jpowsour.2016.05.094
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