Title:
BAB-TYPE BLOCK COPOLYMER, PREPARATION METHOD, BINDER, POSITIVE POLE PIECE, SECONDARY BATTERY, AND ELECTRICAL APPARATUS
Document Type and Number:
WIPO Patent Application WO/2024/066507
Kind Code:
A1
Abstract:
The present application relates to a BAB-type block copolymer, a preparation method, a binder, a positive pole piece, a secondary battery, and an electrical apparatus. In particular, the present application provides a BAB-type block copolymer, which comprises an A-block and a B-block. The A-block comprises a structural unit derived from a monomer represented by formula I, and the B-block comprises a structural unit derived from a monomer represented by formula II; or the A-block comprises a structural unit derived from a monomer represented by formula II, and the B-block comprises a structural unit derived from a monomer represented by I. The binder prepared from the BAB-type block copolymer can effectively slow down the gelatinization of a slurry, improve the stability of the slurry, improve the flexibility of the pole piece, improve the bonding force, reduce the resistance of a diaphragm, reduce the direct-current impedance growth rate of the battery, and/or improve the cycle capacity retention rate of the battery.
Inventors:
ZENG ZIPENG (CN)
LI CHENG (CN)
LIU HUIHUI (CN)
SUN CHENGDONG (CN)
WANG JINGMING (CN)
LI CHENG (CN)
LIU HUIHUI (CN)
SUN CHENGDONG (CN)
WANG JINGMING (CN)
Application Number:
PCT/CN2023/101439
Publication Date:
April 04, 2024
Filing Date:
June 20, 2023
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
C08G81/02; H01M4/13; H01M4/62; H01M10/0525
Foreign References:
| CN115286805A | 2022-11-04 | |||
| US20150057419A1 | 2015-02-26 | |||
| JPH1145720A | 1999-02-16 | |||
| CN108417836A | 2018-08-17 | |||
| CN104610518A | 2015-05-13 | |||
| CN110156999A | 2019-08-23 |
Attorney, Agent or Firm:
BEIJING HAN KUN LAW OFFICES (CN)
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