Preparation method of modified nanocarbon material and lithium ion battery

By modifying the preparation method of nano-carbon materials, and using a combination of air jet mill and demagnetizer, combined with the modification of polymer and small molecule amine, the problems of agglomeration and uneven demagnetization of nano-carbon materials were solved, achieving better dispersibility and demagnetization effect, and improving production efficiency and particle size control.

CN120922852BActive Publication Date: 2026-06-23JIANGXI INSPIRE NANO MATERIALS CO LTD
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Patent Information

Application Number
CN202510974432.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2024-08-19
Filing Date
2025-07-15
Publication Date
2026-06-23
Estimated Expiration
2045-07-15

AI Technical Summary

Technical Problem

When nano-carbon materials are combined with other materials, they are prone to clumping and agglomeration, resulting in uneven distribution, material blockage and performance degradation. They also have problems with dust generation and poor demagnetization.

Method used

A modified carbon nanomaterial preparation method is adopted, which uses a combination of air jet mill and demagnetizer to control the particle size and density of the carbon nanomaterial by using a mixture of polymer and small molecule amine as the modification material. By combining permanent magnet demagnetization and free fall demagnetization, the dispersibility and demagnetization effect are improved.

Benefits of technology

This method achieves uniform dispersion of nano-carbon materials, reduces dust and metal impurity content, improves production efficiency and demagnetization effect, and ensures controllability and dispersibility of particle size.

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Abstract

The application discloses a preparation method of modified nanometer carbon material and a lithium ion battery. An equipment for implementing the preparation method comprises a feeding machine, an air flow pulverizer and a magnetic field removing machine arranged in sequence along a material running direction, and the air flow pulverizer and the magnetic field removing machine are arranged in sequence from top to bottom along a height direction. The preparation method comprises the following steps: in step 1, nanometer carbon material and modified material are mixed according to a mass ratio of 100:0.1-5, and then the mixture is fed into the air flow pulverizer through the feeding machine, wherein the modified material comprises a polymer and a small molecule amine, and the mass ratio of the polymer to the small molecule amine is 100:5-10; and in step 2, after the material is pulverized by the air flow pulverizer, the material is fed into the magnetic field removing machine in a free fall mode under the action of gravity to remove the magnetic field. The nanometer carbon material has better dispersity and lower metal impurity content.
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