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Stirring Of Electrode Materials | JCT Machinery

January 13, 2025

battery slurry double planetary mixer

Goals of Stirring

1. Ensure Uniform Dispersion of Ingredients: Active materials, conductive agents and binders must be evenly distributed in the slurry to optimize the conductivity and ion transport properties of the electrode.
2. Improve the Rheological Properties of Battery Slurry: Adjust the viscosity and fluidity of battery slurry to ensure that it is suitable for subsequent coating processes.
3. Prevent Agglomeration and Sedimentation: Through efficient stirring and shear force, agglomeration of active materials or conductive agents is avoided to ensure consistent electrode performance.

  • 1. Features

  • Stronger shear force than conventional planetary mixer, suitable for extremely high viscosity slurries (>100,000cP).

  • 2. Applications

  • Widely used in the preparation of slurries for positive and negative electrode materials for lithium battery. Double planetary mixer can be used to stir electrode materials with particularly high viscosity, such as high energy density battery slurries.

  • 3. Advantages

  • • High stirring and dispersing efficiency.

  • • Can handle materials with ultra-high viscosity and high solid content.

  • • Equipped with vacuum degassing function to prevent bubbles from affecting electrode performance.

double planetary mixer

Key Control Points in Battery Slurry Stirring Process
1. Stirring Time: Too long or too short will affect the performance of battery slurry and needs to be optimized according to the specific formula.
2. Shear Rate: Too high a shear rate may destroy the structure of the material, such as the dispersion of the conductive agent or the polymer chain of the binder.
3. Temperature Control: The heat generated during stirring may cause solvent volatilization or changes in the properties of the binder, so the temperature needs to be strictly controlled.
4. Vacuum Degassing: Ensure that there are no bubbles in battery slurry to prevent bubbles from causing defects in electrode coating.


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