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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|
|Applicants:||SHENZHEN BTR NEW ENERGY MATERIALS INC.
|Title:||AQUEOUS BINDER FOR USE IN LITHIUM ION BATTERY, PREPARATION METHOD THEREFOR, AND LITHIUM ION BATTERY ELECTRODE PLATE USING SAME|
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.