Lithium Battery Slurry Mixing & Deaeration: The Role of Vacuum Planetary Equipment

The performance of lithium-ion batteries (energy density, cycle life, safety) is directly determined by the mixing and deaeration quality of positive and negative electrode slurries. Battery slurry is a high-viscosity, high-solid-content mixture (active materials, conductive agents, binders, solvents), and even slight mixing unevenness or bubble residues can lead to poor electrode coating, reduced battery capacity, and increased safety risks. A vacuum planetary deaeration defoaming mixer has become a core piece of equipment in lithium battery production lines.
Critical Pain Points in Lithium Battery Slurry Processing
Traditional lithium battery slurry processing adopts a "mixing + separate deaeration" two-step process: first, mixing materials with a disperser, then transferring to a vacuum deaerator for defoaming. This process has three major drawbacks: 1) Secondary bubble introduction: Material transfer between equipment entrains air, offsetting the previous deaeration effect; 2) Uneven dispersion: High-speed dispersion easily destroys the structure of active materials, while low-speed mixing cannot achieve uniform distribution of conductive agents; 3) Low efficiency: The two-step process takes 3-5 times longer than integrated equipment, which cannot meet the mass production needs of lithium batteries.
How Vacuum Planetary Mixers Boost Battery Slurry Quality
Vacuum planetary deaeration defoaming mixers address these pain points through integrated and precise design: 1) Integrated process: Mixing, dispersing, deaeration, and defoaming are completed in one step, no material transfer, avoiding secondary bubbles and pollution; 2) Gentle and uniform mixing: Planetary motion ensures uniform dispersion of active materials and conductive agents without damaging material structure, improving electrode conductivity; 3) Temperature control function: Optional jacket temperature control (heating/cooling) prevents solvent volatilization and material denaturation caused by friction heat during mixing; 4) High vacuum degree: Effectively removes micro-bubbles in the slurry, ensuring smooth electrode coating and reducing battery internal resistance.
As the new energy industry develops rapidly, the demand for high-quality battery slurry processing equipment is increasing. Consult our battery industry experts to get a customized vacuum planetary mixer solution for your production line.

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