Recovery method of ternary pole powder

Abstract

The invention relates to the technical field of battery recovery, in particular to a ternary pole powder recovery method which comprises the following steps: S1, obtaining a pole piece from a waste ternary lithium battery, and separating the pole piece to obtain a current collector and pole powder; s2, crushing and screening the current collector to obtain current collector fragments and the pole powder; and S3, collecting the pole powder, and removing impurities in the pole powder to obtain the ternary pole powder. The method has the beneficial effects that the pole pieces are separated, so that the pole powder is stripped from the current collecting pieces, the problem that the recovery rate of the pole powder is reduced due to the fact that the pole powder is not completely separated from the current collecting pieces due to direct crushing and screening of a positive electrode material in the prior art is solved, and the recovery rate of the pole powder is improved; and the purity of the pole powder is improved by removing impurities from the pole powder, so that the problems that the pole powder has impurities and is low in purity in the prior art are solved.

Description

A kind of recovery method of ternary pole powder technical field The present invention relates to battery recycling technical field, be specifically related to a kind of recycling method of ternary pole powder. Background technique Ternary lithium battery, also known as ternary polymer lithium battery, refers to the positive electrode material using nickel-cobalt lithium manganate or nickel-cobalt-aluminum Lithium battery with ternary cathode material of lithium oxide. Compared with lithium cobalt oxide batteries, batteries based on ternary materials as cathodes have higher Safety, compared with lithium iron phosphate batteries, has a higher energy density, so ternary lithium batteries have become the mainstream at present power battery. With the development of the new energy vehicle industry, ternary lithium batteries have also been widely used in the field of new energy vehicles. Application, which leads to the existence of a large number of ternary lithium batte...

AI Technical Summary

Problems solved by technology

This technical means will lead to incomplete separation of the current collector in the positive electrode material and the electrode powder, which will reduce the recovery rate of the electrode powder

At the same time, in the prior art, there is a lack of methods for removing impurities from the separated pole powder, which leads to more impurities mixed into the final ternary pole powder and a decrease in purity.

Images