Artificial graphite negative electrode material and preparation method and application thereof

By using coal and catalysts to prepare artificial graphite anode materials, the problems of high cost and high energy consumption in existing technologies have been solved, achieving a low-cost and efficient graphitization process and improving the electrochemical performance and cycle performance of the materials.

CN110282622BActive Publication Date: 2026-07-24EAST CHINA UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
EAST CHINA UNIV OF SCI & TECH
Filing Date
2019-07-12
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing technologies for preparing artificial graphite anode materials are characterized by high raw material costs and enormous energy consumption, making it difficult to achieve widespread application.

Method used

Using inexpensive coal as raw material and adding metal oxides or non-metallic acids as catalysts, artificial graphite anode materials with high graphitization degree are prepared by lowering the graphitization treatment temperature. The specific steps include crushing and screening, ash removal, pre-carbonization and graphitization treatment.

Benefits of technology

It significantly reduces production costs and energy consumption, while improving the electrochemical performance of the material. It has high initial discharge capacity, excellent coulombic efficiency, and good cycle performance, showing promising application prospects.

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Abstract

The present application relates to a kind of artificial graphite negative material and its preparation method and application, and the application of high graphitization structure negative material prepared by catalyzing coal-based material under low temperature condition, and it is applied in lithium ion battery negative material, coal is crushed and screened, catalyst is mixed with coal sufficiently and uniformly, and highly graphitized structure artificial graphite material is obtained after graphitization treatment;Catalyst is metal oxide or non-metal acid.Compared with prior art, the present application can effectively reduce the heat treatment temperature in graphitization process, and improve the graphitization degree of artificial graphite, the production process is simple, the cost is low, and at the same time, it is applied to lithium ion battery negative material, with the advantages of high initial coulomb efficiency, good rate performance, long cycle life and the like.
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