Method for producing positive electrode sheet for lithium ion battery, and positive electrode sheet and lithium ion battery produced by the method

摘要

The present invention discloses a manufacturing method of an anode plate of a lithium ion battery, comprising a water-phase slurry preparation process including a raw-material mixing step, that is, mix the raw materials of anode active material powder and particles, a conductive agent, and a conductive agent adhesive uniformly into a paste slurry, where the conductive agent adhesive is used to make the conductive agent uniformly adhere to the surface of the anode active material powder and particles. In the raw-material mixing step, an accessory adhesive is added for improving adhesion and flexibility of the plate in cooperation with the conductive adhesive. A manufacturing method of an anode plate of a lithium ion battery is disclosed. The present invention also discloses an anode plate and a lithium ion battery manufactured by this method. The present invention has the following beneficial technical effects: The process is simple, applicable for the available mass production equipments, and beneficial to industrial application and promotion; an anode plate with an acceptable surface density can be obtained by the method of the present invention, and the plate is flexible and not easily broken, thus eliminating the defect of serious "falling of materials" with the plate manufactured only using gelatin as the adhesive.