Carbon Coating to Active Materials

Eirich Intensive Mixer can carry out complex processing of battery materials—including mixing, granulation, kneading, and coating—all within a single unit (one-pot process).This method is expected to be used not only for lithium-ion battery manufacturing but also for next-generation batteries, such as all-solid-state batteries.

This article highlights a processing example of carbon coating on active materials introduced in the dry process.
We hope this provides helpful insights for those facing challenges such as:
・Incomplete mixing or segregation caused by differences in specific gravity between active materials and conductive additives
・Difficulty in dispersing conductive additives due to their strong tendency to agglomerate

Eirich Intensive Mixer is a high-speed mixer and granulator designed for a wide range of processing tasks involving raw materials, mixtures, and compounds.Optimal material processing is achieved by selecting the appropriate mixing tool shape and rotation speed according to the application.
By adjusting the operating conditions, a single machine can handle multiple processes such as mixing, granulation, kneading, and slurry preparation.The mixer features a jacketed mixing pan for both cooling and heating, and offers a wide range of customizable options to accommodate various processes.

Advantages of the Eirich mixing principles

1. Eccentrically positioned rotor tool (mixing tool)
   The rotor tool shape, rotation direction, and speed range can be selected to suit the application.
2. Tool Set (scrapers)
   It scrapes off raw materials adhering to the inner wall and bottom of the mixing pan, while simultaneously promoting efficient material transfer to the rotor tool.
3. Mixing Pan (mixing vessel)
   Through rotation, all raw materials in the mixing pan are continuously supplied to the rotor tool.

Unique Mechanisms

• Short mixing time and high homogeneity
• Capable of processing raw materials with varying specific gravities
• The rotating mixing pan promotes material movement and reduces residue.
• By selecting the rotor tool shape and adjusting the mixing pan speed, the system can handle complex material processing
• Process integration enables compact and energy-efficient production systems
• Setting optimal operating parameters ensures consistent and reproducible material processing

Below is an overview of the equipment best suited for the process introduced above, along with the test machines currently available at our Technical Center.If you would like more information, please feel free to contact us via the inquiry form.