Lithium ion battery positive electrode adhesive and preparation method thereof

The invention provides a preparation method of a lithium ion battery positive electrode adhesive. The preparation method comprises a step of preparing a pre-polymer emulsion, a step of a polymerization reaction and a step of a demulsification reaction. The adhesive prepared by the preparation method of the lithium ion battery positive electrode adhesive has an excellent liquid absorption effect, it is ensured that a battery positive electrode prepared based on the adhesive can rapidly infiltrate and form an SEI film, and the rate capability and the initial specific capacity of a battery are effectively improved. The adhesive provided by the invention also has proper viscosity and excellent dispersing performance, mechanical strength and flexibility, and can maintain a good bonding effect at different temperatures. The prepared adhesive high-molecular polymer has a proper Tg transition temperature, and it is ensured that a battery using the adhesive can keep high relative capacity when working under high and l