Title:
BINDER AND PREPARATION METHOD THEREFOR, ELECTRODE PLATE AND SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/232162
Kind Code:
A1
Abstract:
A binder and a preparation method therefor, an electrode plate and a secondary battery. The binder comprises an imide polymer, first conductive fibers, second conductive fibers and conductive particles, wherein the first conductive fibers have reactive groups, and the reactive groups and the imide polymer undergo a chemical reaction to generate chemical bonds; and the average diameter of the second conductive fibers is not less than 0.3 µm, and the average length of the second conductive fibers is not less than 10 µm. The binder provided in the present invention can not only effectively reduce the resistance of the electrode plate so as to improve the conductivity of the electrode plate, but can also ameliorate the cracking problem of a thick electrode plate and improve the coating surface density of the plate so as to improve the energy density of a battery.
Inventors:
YUE MIN (CN)
ZHOU ZHUXIN (CN)
QIAN CHAO (CN)
ZHOU ZHUXIN (CN)
QIAN CHAO (CN)
Application Number:
PCT/CN2023/108249
Publication Date:
December 07, 2023
Filing Date:
July 19, 2023
Export Citation:
Assignee:
SHENZHEN YANYI NEW MAT CO LTD (CN)
International Classes:
H01M4/62; C08G73/10; H01M4/13; H01M10/0525
Foreign References:
| CN104937757A | 2015-09-23 | |||
| CN107845772A | 2018-03-27 | |||
| CN113078317A | 2021-07-06 | |||
| CN109980199A | 2019-07-05 | |||
| JP2015229741A | 2015-12-21 | |||
| CN115832310A | 2023-03-21 |
Attorney, Agent or Firm:
BEIJING WUZHOUYANGHE & PARTNERS (CN)
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