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Processtechnology for Battery Applications

Processtechnology for Battery Applications
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Processtechnology for Battery Applications - 1

Processtechnology for Battery Applications One Step ahead with us! CHEMICAL INDUSTRY a Business Field of NETZSCH Grinding & Dispersing

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Processtechnology for Battery Applications - 3

Trust NETZSCH Solutions for Battery Materials Lithium ion batteries store and supply electrical energy in mobile telephones, laptops and tools. Electrical vehicles, such as bicycles, scooters and other hybrid concepts are also creating a steadily rising demand for batteries. The goal is to develop ever more powerful batteries that feature increased capacity, a longer lifetime, shorter charging times, lower weight and size. Lithium ion batteries are basically comprised of a negative electrode (anode), a positive electrode (cathode) and a separator membrane. The individual electrodes are made...

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Processtechnology for Battery Applications - 4

ANODE & CATHODE MATERIALS One option for the synthesis of cathode and anode materials is the so-called solid-state process. In this process route, the active material is created from the raw materials through a chemical transformation in suitable furnaces. Depending on the raw materials used, a wet grinding stage with dry pre-grinding processes can be required for the raw materials prior to the synthesis. The CGS and s-Jet® fluidized bed jet mills can be used for the dry grinding. For the wet grinding, the Zeta®, Neos or Zeta® RS agitator bead mills are used, depending on the required...

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Product Machine Lithium Cobalt Oxide (LCO) CSM 165 Lithium NiCoMn Oxide (NCM) CSM 165 Lithium NiCoMn Oxide (NCM) CSM 260 Lithium Iron Phosphate (LFP) CGS 71 Pitch Cokes CGS 16 Artificial Graphite CGS 16 Working capacity depends on required fineness and product characteristics. Product Lithium Manganese Oxide (LMO) Lithium Iron Phosphate (LFP) Lithium Titanate (LTO) Metal Silicon Machine Alpha Zeta® 25 Neos 150 Alpha Zeta® 25 Zeta® 25 + Zeta® RS 60 Working capacity depends on required fineness and product characteristics.

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SEPARATORS In order to prevent an internal short-circuit in the cells, a separator is inserted between the electrodes. The separators, which are typically made of polymer (e.g. PE, PP), are perforated to allow the ions to pass through. For increased thermal stability and the prevention of shrinkage, so-called inorganic composite separators (ceramic-coated foils) are more and more used. The ceramic suspensions used here typically have particle sizes in the submicron range. Wet mills, such as the Discus, Zeta®, Neos or the Zeta® RS are used for the production of these coating systems.

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Working capacity Fineness [k9slurry/h] Alumina (Al2O3) Alpha Zeta® 10 50 d95 = 1.0 Alumina (Al2O3) Alpha Discus 20 580 d50 < 1.0 Working capacity depends on required fineness and product characteristics.

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CONDUCTIVE ADDITIVES & BATTERY SLURRIES The majority of active materials are in the electrode with limited electrical conductivity additionally the polymer matrix in the electrode needs to be electrical conductive. That is why additives are used also to reduce the required charging time of the battery when beeing added to the battery slurries. Here it is primarily the carbon-based raw materials that are used, such as carbon black, graphite and carbon nano tubes (CNTs), which should be characterized by the highest possible aspect ratio. The materials must first be carefully dispersed or...

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Processtechnology for Battery Applications - 9

Product MWCNTs in NMP SWCNTs in Water SWCNTs in Water SWCNTs in NMP Acetylene black in Water Acetylene black in NMP Process Pass operation Re-circulation operation Re-circulation operation Re-circulation operation Pass operation Pass operation Working capacity depends on required fineness and product characteristics.

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Processtechnology for Battery Applications - 10

The NETZSCH Business Unit Grinding & Dispersing offers an extensive machine program for processengineering, providing solutions for wet and dry grinding, mixing, dispersing and deaeration. Long-term experience, consistent development work, daily contact with our customers and developments with more than 100 patents ensure our technical competence and further attest to our quality-consciousness. The bundling of process-engineering expertise and the extensive machine program, ranging from laboratory to production machines to complete production lines, is unique worldwide. Whether for dry or...

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The aim of dispersing and mixing for material preparation ■ Producing a homogeneous distribution of a fine disperse phase ■ Easy mixing and dispersing in an enclosed, emission-free and time-saving process Your benefit of high quality dispersing and mixing ■ Slurry preparation without grinding media ■ Homogeneous mixing process for improved product quality Possible machines ■ Economic Dispersionizer Omega® ■ Inline-Disperser Epsilon ■ Planetary Mixer PMH/PML The aim of wet milling for material preparation ■ Creating a large specific surface ■ Homogeneous mixing of the individual raw...

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Processtechnology for Battery Applications - 12

Lithium Source

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Processtechnology for Battery Applications - 13

Production Process Every Specific Product Requirement netary Mixer PMH/PML Inline-Disperser Epsilon Mixing Process Post Process Material Characterization Conductivity Agent, Binder, Additives Economic Dispersionizer Omega® Inline-Disperser Epsilon

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Processtechnology for Battery Applications - 14

Li-ion Batteries NETZSCH Technologies inAgitator Bead Mill Alpha® Discus Our technology ■ Horizontal agitator bead mill with TetraNex® disk grinding system ■ Activation of the grinding media with high intensity through the entire grinding chamber by the disk agitator shaft ■ Use of grinding media from approx. 0.5 mm to 5.0 mm Your benefit ■ Optimum grinding chamber material - normally ceramics or wear-resistant polymers - for requirement of LIB ■ The grinding media are evenly distributed in the grinding chamber and intensively activated by the optimal designed TetraNex® grinding disks ■...

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Processtechnology for Battery Applications - 15

Production Process Wet Grinding Technologies Agitator Bead Mill Alpha® Zeta® Our technology Your benefit Agitator bead mill with peg grinding system with optimized volume specific power density Use of grinding media down to 0.2 mm Highest productivity Optimum grinding chamber material – normally ceramics or wear-resistant polymers – for requirement of LIB Highly efficient centrifugal separation system for a safe production Highest productivity at lowest specific energy Control of particle size distribution by setting of process parameters Simple process control and excellent reproducibility...

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