AQUEOUS BINDER FOR LITHIUM ION BATTERY NEGATIVE ELECTRODE AND PREPARATION METHOD OF THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a method for preparing an aqueous binder for a lithium ion battery negative electrode having improved viscosity, low dispersion efficiency, and good cycle characteristics.SOLUTION: A method of preparing an aqueous binder for a lithium ion battery negative electrode is by the following procedure. A reactive emulsifier, a water-soluble acrylic monomer, an oil-soluble acrylic monomer, and an initiator solution are sequentially added and homogeneously mixed to obtain a base solution, the temperature is raised to initiate polymerization, and while maintaining stirring, a mixed solution of a water-soluble acrylic monomer and an oil-soluble acrylic monomer and an initiator solution are added and reacted.SELECTED DRAWING: Figure 4