Title:
THREE-DIMENSIONAL COMPOSITE METAL LITHIUM NEGATIVE ELECTRODE, METAL LITHIUM BATTERY AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/212392
Kind Code:
A1
Abstract:
The present application relates to a three-dimensional composite metal lithium negative electrode, a metal lithium battery, and an apparatus. The composite metal lithium negative electrode comprises metal lithium particles and a three-dimensional polymer backbone; the metal lithium particles are filled in the three-dimensional polymer backbone, and the three-dimensional polymer backbone comprises a lithiophilic segment, an active site, and a part that contains a polymer. The present application ameliorates the volume effect of a metal lithium negative electrode during a charging and discharging process, and can inhibit a side reaction between metal lithium and an electrolyte. The specific surface area of the metal lithium negative electrode is enlarged, and a lithiophilic nano-site is introduced so as to guide metal lithium to be evenly deposited, which can effectively inhibit lithium dendrite growth. Additionally, the three-dimensional backbone covers active lithium, which can effectively inhibit the risk faced in a traditional scheme of an SEI film being brittle.
Inventors:
LIU CHENGYONG (CN)
GUO YONGSHENG (CN)
OUYANG CHUYIN (CN)
GUO YONGSHENG (CN)
OUYANG CHUYIN (CN)
Application Number:
PCT/CN2020/086260
Publication Date:
October 28, 2021
Filing Date:
April 23, 2020
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/66
Foreign References:
| CN109994739A | 2019-07-09 | |||
| CN102201565A | 2011-09-28 |
Other References:
See also references of EP 3930058A4
Attorney, Agent or Firm:
BEIJING ZHICHEN INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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