Ultrafine Stirring Mill, Wet Stirring Mill, Ball Milling Equipment for Sodium Battery Raw Materials

Release time:

2025-04-17 07:00

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With the acceleration of global energy structure transformation, sodium-ion batteries, with their advantages of abundant resources, low cost, and high safety, have become an important development direction in the energy storage field. The performance of sodium battery cathode and anode materials (such as layered oxides, Prussian blue, hard carbon, etc.) is highly dependent on the particle size distribution, dispersibility, and purity of the raw materials. The preparation of nano-scale powders has become the key to the processing of raw materials for sodium batteries.

The cell mill adopts a vertical wet grinding structure. Through the high-speed rotation of the grinding media (such as zirconia beads), strong shear force and impact force are generated to achieve ultra-fine pulverization of the materials. It has high energy density, and the grinding efficiency is improved by more than 30%, energy consumption is reduced by 20%, and the production cycle is significantly shortened. The vertical structure design makes the grinding media movement more uniform, avoids material agglomeration, and ensures that the powder has a narrow particle size distribution and good dispersibility. This characteristic is crucial for the ion conduction and structural stability of the sodium battery electrode materials, and can improve the cycle life and rate performance of the battery. The fully enclosed grinding chamber combined with the automatic dust removal device eliminates dust pollution and meets environmental protection requirements. Wet grinding avoids damage to material properties caused by high temperatures, and at the same time supports direct slurry pumping, simplifying the production process and reducing the risk of manual intervention.

Cathode Material Preparation: Through wet ultra-fine grinding, the cell mill can refine particles to the nanoscale, increase the specific surface area of the material, and improve the efficiency of sodium ion intercalation and deintercalation. At the same time, the uniform particle size distribution reduces agglomeration and optimizes the compaction density and conductivity of the electrode material.

Anode Material Modification: The pore structure and surface morphology of hard carbon anodes directly affect the sodium storage capacity. The cell mill can precisely control the particle size and surface roughness of hard carbon particles, and cooperate with dispersants to achieve nanoscale coating (such as TiO₂, carbon coating), improving the initial Coulombic efficiency and cycle stability of the material.

Dispersion Optimization of Conductive Agents and Additives: In the preparation of conductive agents (such as carbon nanotubes, graphene) and electrolyte additives, the high shear force of the cell mill can break agglomeration, achieve nanoscale dispersion, improve the conductivity and interfacial compatibility of the materials, and help optimize the overall battery performance.

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