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Preparation method of lithium manganese oxide as cathode material for lithium-ion batteries

1. High temperature solid-phase method. The basic process flow is: mixing→ Roasting→ Grinding→ Screening→ Product.

2. Melt impregnation method. It is a good method for preparing spinel lithium manganese oxide by solid-state method, which can obtain cathode materials with excellent electrochemical performance. However, due to the complex operation and harsh conditions, it is not conducive to industrialization.

3. Microwave synthesis method. Its use in material synthesis is significantly different from traditional high-temperature solid-state methods. Using this method to prepare materials with excellent electrochemical performance can greatly shorten the synthesis reaction time.

4. Hydrothermal synthesis method. The LiMn2O4 cathode material for lithium-ion batteries synthesized by hydrothermal synthesis method has a stable crystal structure and uniform crystal state. Therefore, the synthesized material has excellent physical and electrochemical properties.

5. coprecipitation method. The research shows that compared with the solid state reaction, the lithium ion battery materials prepared by the coprecipitation method not only have higher electrochemical capacity and longer cycle life, but also have the advantages of simple process, simple operation and fast reaction speed.

6. Sol gel method. In fact, it is a branch of the coprecipitation method. The LiMn2O4 produced has excellent physical and electrochemical properties, but due to the high cost, it is not conducive to industrial production.

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