Granulation additive and preparation method for high-reliability lithium-ion batteries using same

Abstract

Provided are a granulation additive and a preparation method for high-reliability lithium-ion batteries using the same. The preparation method involves adding a granulation additive into a cathode material for batteries. The granulation additive is a water-soluble polyether resin obtained through ring-opening polymerization of an organic compound A under the action of an organic weak base B serving as an initiator and a solvent C. The granulation additive possesses high adhesive strength and good electrical conductivity, and can function as a flexible binder and be used in conjunction with conventional binders. During the granulation process, the granulation additive has binding and granulating effects, rounds the cathode powder particles and improves the uniformity of the cathode powder.

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