For high-viscosity electrode pastes and advanced battery research, a three-shaft vacuum slurry mixer (often called a planetary dispersive mixer) is the professional standard. Unlike standard mixers, these units combine low-speed planetary folding with high-speed shear dispersion to break down tough agglomerates in binders like PVDF or carboxymethyl cellulose (CMC).
The key selection criteria of an appropriate slurry mixer: (1) Mixing Speed: The unit offers at least 600–1400 RPM if you are working with high-viscosity slurries or difficult-to-disperse binders like PVDF or CMC/SBR. (2) Vacuum Level: To effectively eliminate bubbles, the mixer should maintain a vacuum of at least -0.098 MPa for the duration of the cycle. (3) Temperature Control: High-speed mixing can generate significant heat. Units with water-cooled jackets help prevent the degradation of temperature-sensitive binders
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| Power |
- AC220V±10%, single phase, 50/60Hz, ~2000 W
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- AC220V±10%, single phase, 50/60Hz, ~4000 W
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- AC220V±10%, single phase, 50/60Hz, ~5500 W
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| Mixing Barrel |
- Effective Volume: 1.2-2.0 L (design volume is 3.8 L)
- I.D. 180 mm, Depth: 150 mm
- Barrel material is SS304 (SS316 can be supplied upon request)
- Cooling jacket with water inlet and outlet are available. The connection port size is G3/8".
- No discharge valve at the bottom of the barrel
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- Effective Volume: 2.7-5.0 L (design volume is 8.0 L)
- I.D.240 mm, Depth: 180 mm
- Barrel material is SS304 (SS316 can be supplied upon request)
- Cooling jacket with water inlet and outlet are available. The connection port size is G3/4".
- G1-1/2" discharge valve is available
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- Effective Volume: 5.0-10.0 L (design volume is 16 L)
- I.D. 310 mm, Depth: 220 mm
- Barrel material is SS304 (SS316 can be supplied upon request)
- Cooling jacket with water inlet and outlet are available. The connection port size is G1/2".
- G 1" discharge valve is available at the barrel bottom
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| Mixing Part |
- Mixing motor power: 750 W.
- Maxing blade (2 pcs): SS304, Spiral twist type, 90° helix, diameter: 94 mm
- Mixing blade speed: 8-76 rpm (line speed: 0.03-0.37m/s, Planetary revolution speed: 5-52 rpm)
- Stirring blade distance: 6 mm
- Distance between mixing blade and barrel wall: 3.0 mm
- Distance between mixing blade and barrel bottom: ~2-3 mm
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- Mixing motor power: 1500 W.
- Maxing blade (2 pcs): SS304, Spiral twist type, 90° helix, diameter: 124 mm
- Mixing blade speed: 10-98 rpm (line speed: 0.06-0.60m/s; Planetary revolution speed: 5-50 rpm)
- Stirring blade distance: 6.5 mm
- Distance between mixing blade and barrel wall: 3.0 mm
- Distance between mixing blade and barrel bottom: ~2-3 mm
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- Mixing motor power: 2200 W.
- Maxing blade (2 pcs): SS304, Spiral twist type, 90° helix, diameter: 161 mm
- Mixing blade speed: 10-100 rpm (line speed: 0.08-0.80m/s; Planetary revolution speed: 5-50 rpm)
- Stirring blade distance: 7.5 mm
- Distance between mixing blade and barrel wall: 3.0 mm
- Distance between mixing blade and barrel bottom: ~2.5 mm
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Dispersing Part
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- Dispersing motor power: 1100 W
- Dispersing blade (1 pcs): SS304, diameter: 60 mm
- Dispersing rotation speed: 450-4450 rpm
- Dispersing line speed: 1.3-13 m/s
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- Dispersing motor power: 1100 W
- Dispersing blade (1 pcs): SS304, diameter: 60 mm
- Dispersing rotation speed: 450-4450 rpm
- Dispersing line speed: 1.3-13 m/s
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- Dispersing motor power: 2200 W
- Dispersing blade (1 pcs): SS304, diameter: 70 mm
- Dispersing rotation speed: 610-6100 rpm
- Dispersing line speed: 2.2-22 m/s
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Spatula
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- 1 pcs of spatula was used to scratch the high viscosity slurry near the barrel wall and improve the mixing homogeneity.
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- 1 pcs of spatula was used to scratch the high viscosity slurry near the barrel wall and improve the mixing homogeneity.
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- 1 pcs of spatula was used to scratch the high viscosity slurry near the barrel wall and improve the mixing homogeneity.
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| Vacuum Pump |
- Built-in single-stage vacuum pump
- Vacuum Level: -0.08 MPa
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- Built-in single-stage vacuum pump
- Vacuum Level: -0.08 MPa
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- Built-in single-stage vacuum pump
- Vacuum Level: -0.08 MPa
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| Certification |
- CE certified
- UL and CSA certification is available upon request at extra cost
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- CE certified
- UL and CSA certification is available upon request at extra cost
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- CE certified
- UL and CSA certification is available upon request at extra cost
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References:
D. Grießl, et al., Effect of the Slurry Mixing Process on the Structural Properties of the Anode and the Resulting Fast-Charging Performance of the Lithium-Ion Battery Cell, J. Electrochem. Soc., 2022, 169, 020531
V. Wenzel, et al., Challenges in Lithium-Ion-Battery Slurry Preparation and Potential of Modifying Electrode Structures by Different Mixing Processes, Energy Technology, 2015, 3, 692-698
