Efficient production technology of lithium battery negative electrode slurry

Abstract

The invention discloses an efficient production technology of lithium battery negative electrode slurry, which includes the following steps: S1, weighing and taking graphite, modified carbon nanotubes, sodium carboxymethyl cellulose and styrene-butadiene rubber according to the mass ratio of 95:3:1:1; S2, adding ultra-pure water into a homogeneous material barrel, and adding sodium carboxymethyl cellulose at a mass concentration of 1% into the ultra-pure water and carrying out homogenization for 9-10h; S3, continuing to add graphite and modified carbon nanotubes into the homogeneous material barrel; and S4, adding styrene-butadiene rubber into the homogeneous material barrel. According to the invention, sodium carboxymethyl cellulose is added to the negative electrode slurry to aid the dispersion of graphite particles, modified carbon nanotubes are used as a conductive agent of the negative electrode slurry, and a specific homogenizing treatment device is used to homogenize the raw materials step by step. Therefore, the slurry obtained has good homogeneity and stability, the processing efficiency is high, the processing process is easy to control and manage, and the production efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of lithium batteries, and in particular relates to a production process of high-efficiency lithium battery negative electrode slurry. Background technique [0002] Since the successful development of lithium-ion batteries, due to their unique advantages such as high specific energy, high working voltage, wide application temperature range, low self-discharge rate, long cycle life, no pollution, and good safety, they have been widely used in computers. , cameras, aerospace, artificial satellites, small medical instruments and military communication equipment and other fields. [0003] In recent decades, with the development of science and technology, lithium-ion and other related battery technologies have made great progress. But there are still some problems. The pulping process is the most important link in the entire production process of lithium-ion batteries, which has an impact on product quality of m...

AI Technical Summary

Problems solved by technology

However, most of the current processes still use the traditional slurry preparation process, and the high-speed dispersion process is used to disperse the slurry. The slurry prepared by this process is prone to agglomeration, poor uniformity, poor stability, and long processing time.

The performance consistency of lithium-ion batteries prepared by using this slurry is poor, which affects the assembly and use of lithium-ion batteries

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