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1. (WO2018161822) AQUEOUS BINDER FOR USE IN LITHIUM ION BATTERY, PREPARATION METHOD THEREFOR, AND LITHIUM ION BATTERY ELECTRODE PLATE USING SAME

Pub. No.:    WO/2018/161822    International Application No.:    PCT/CN2018/077446
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Wed Feb 28 00:59:59 CET 2018
IPC: C08F 8/00
C08F 16/06
C08F 261/04
C08F 251/00
C09J 151/00
C09J 129/04
H01M 4/62
H01M 4/13
Applicants: SHENZHEN BTR NEW ENERGY MATERIALS INC.
深圳市贝特瑞新能源材料股份有限公司
Inventors: LIU, Jun
刘俊
WANG, Weihua
王伟华
REN, Jianguo
任建国
YUE, Min
岳敏
Title: AQUEOUS BINDER FOR USE IN LITHIUM ION BATTERY, PREPARATION METHOD THEREFOR, AND LITHIUM ION BATTERY ELECTRODE PLATE USING SAME
Abstract:
Provided herein are an aqueous binder for use in a lithium ion battery, a preparation method therefor, and a lithium ion battery electrode plate using the same. The aqueous binder has a structure represented by formula I. In the present application, a hydroxyl group in a repeating unit group of a water-soluble polymer is modified to introduce a flexible side-chain polar group containing a polar anionic group, such that the polarity effect of the polymer and a current collector can be enhanced, thereby improving a binding force. In addition, the flexibility of the polymer is improved, thereby making it possible to prepare a battery electrode plate having a good flexibility, and enable an electrode plate to have high initial coulombic efficiency. The preparation method for the aqueous binder herein is simple, and can be conducted under mild conditions with easily available raw materials, and is suitable for popularization and application.