Negative electrode slurry solid-liquid mixing and dispersion system
Inline solid-liquid mixing and dispersion system for battery materials
The negative electrode slurry's key is balancing viscosity and dispersion. Process design that can be reproduced up to mass production.
Negative electrode slurry (graphite, Si-based) tends to have high solid content and high viscosity, making it a challenging material for mixing and dispersion. Issues such as clumping during powder addition, poor binder dispersion, mixing failures due to increased viscosity, and variations in coating properties are common, especially with Si-based materials, where the dispersion state directly affects battery performance and lifespan. Additionally, there are many cases where dispersion can be achieved in the research phase but cannot be reproduced during mass production. This system is designed to optimize the entire process from powder supply to dispersion and formulation, optimizing input conditions, dispersion energy, and fluid design. It achieves uniform dispersion even under high viscosity conditions and ensures reproducibility through consistent scale-up design from the lab to mass production. We propose the optimal process tailored to material properties and formulation conditions.
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basic information
A solid-liquid mixing and dispersion system for negative electrode slurry that integrates powder supply, premixing, high-shear dispersion, circulation homogenization, and blending processes. The system optimizes the input order, shear conditions, residence time, and fluid design according to the particle size distribution, specific surface area, binder properties, solid concentration, and viscosity changes of graphite and Si-based materials. It supports inline continuous processing, circulation processing, and batch processing, enabling stable dispersion even under high viscosity conditions. In addition to selecting equipment including high-shear dispersion devices (such as IKA), it accommodates the construction of a line that includes powder supply, piping design, storage tanks, CIP, and data management. The design philosophy is consistent across lab machines, small machines, pilot systems, and mass production lines, ensuring reproducibility during scale-up.
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It varies depending on the specifications.
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Applications/Examples of results
【Target Applications】 - LiB negative electrode slurry - Graphite-based negative electrode materials - Si-based negative electrode materials - High solid content electrode slurry 【Common Issues】 - High viscosity prevents mixing - Clumps and undispersed particles remain - Quality varies during coating - Dispersion state is unstable with Si-based materials - Cannot reproduce during scale-up 【Response Measures】 Optimize powder input conditions, dispersion conditions, circulation design, and viscosity control throughout the entire process to achieve uniform dispersion and coating stability. Provide consistent support from lab validation to mass production startup.
Detailed information
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The globally renowned IKA Group and Shibuya Kogyo have been collaborating on business and technology since 2010, working together on inline continuous dispersion systems.
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Inline solid-liquid mixing pilot plant. It achieves stable dispersion while suppressing clumping through continuous mixing. It is space-saving and supports short processing times, allowing for consistent scale-up considerations from research and development to mass production.
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It is a small experimental device that can be used on a tabletop. It can be utilized in the early stages of process evaluation.
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| Model number | overview |
|---|---|
| Inline solid-liquid mixing dispersion system |
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Company information
Our company is headquartered in Kanazawa City, Ishikawa Prefecture, and has sales offices and factories both within and outside the prefecture. We focus on the bottling business, which involves filling beverages and other products, and we are expanding into various fields such as solid-liquid mixing and dispersion systems, laser processing machines (including fiber lasers and CO2 lasers), and semiconductor assembly equipment (such as taping machines, multifunctional test handlers, ball mount machines, and bonders). Please feel free to contact us if you have any inquiries.
![[Case Study] Preventing Bead Jamming to Achieve Stable Operation of the Disperser](https://image.mono.ipros.com/public/product/image/d51/2000583475/IPROS50379147423046278461.png?w=280&h=280)
