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20L Planetary Mixer for Battery Slurry – Efficient Cathode & Anode Mixing
As a dedicated battery slurry mixer, this planetary mixer excels as both a cathode slurry mixer and anode slurry mixer. The combination of planetary kneading, high‑speed dispersion, vacuum degassing, and hydraulic discharge makes it the ideal choice for pilot lines and small‑batch production of premium lithium batteries.
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20L Planetary Mixer for Battery Slurry – High‑Efficiency Cathode & Anode Mixing with Vacuum
⚡ Key Performance Metrics: 20L working capacity | 4‑5x higher mixing efficiency | ≤ -0.095MPa vacuum degassing | 2980 rpm high‑speed dispersion | hydraulic discharge system
Product Overview – Application Scope
PPCELL’s planetary mixer for battery slurry is specifically designed for high‑viscosity cathode and anode slurry preparation in the lithium-ion battery industry. It serves both cathode slurry mixer and anode slurry mixer applications for EV, ESS, power tool, and solid‑state batteries. This vacuum planetary mixer is used in the slurry mixing process after powder weighing and before coating. Production scales range from R&D labs and pilot lines (small batches) to small‑scale production (up to hundreds of kg per batch), with options for explosion‑proof electricals, higher dispersion power, and PLC + HMI automation.
Technical Specifications
| Parameter | Value |
|---|---|
| Working capacity | 20 L |
| Pot size (Diameter × Height) | Φ350 × 300 mm |
| Stirring power | 2.2 kW |
| Planetary revolution speed | 0 – 48 rpm |
| Blade self‑rotation speed | 0 – 100 rpm |
| Disperser power | 3 kW |
| Dispersion speed | 2980 rpm |
| Vacuum level | ≤ -0.095 MPa |
| Heating method | Electric / steam / hot oil (jacketed vessel) |
| Discharge system | Hydraulic extrusion press (follow‑plate) |
Why Choose PPCELL Planetary Mixer for Battery Slurry?
- 3D‑printed kneading blades – Investment casting via 3D printing + CNC multi‑axis finishing, with optimized cross‑section that reduces drag and energy consumption, delivering 4‑5x higher mixing efficiency than conventional pentagonal paddle blades.
- Planetary + high‑speed dispersion – The planetary frame rotates while blades self‑rotate, forcing material to flow vertically and radially. An independent disperser (2980 rpm) provides intense shear, emulsifying and deagglomerating solids for uniform mixing.
- Vacuum degassing (≤ -0.095 MPa) – Removes air bubbles, prevents solvent evaporation, and ensures bubble‑free slurry for defect‑free coating, improving electrode quality and cell safety.
- Jacketed vessel with intelligent temperature control – Electric, steam, or thermal oil heating ensures precise temperature regulation for both cathode (NMP‑based) and anode (water‑based) slurries, optimizing rheology.
- Hydraulic discharge system – Includes a follow‑plate extruder for high‑viscosity paste, minimizing residue and simplifying cleaning between batches.
- No dead corners – The scraping blade continuously cleans the inner wall, while the unique blade shape creates kneading, extrusion, and granulation actions for uniform particle distribution.
Applications: Cathode & Anode Slurry Preparation
Our planetary mixer for battery slurry is widely used in:
- Cathode slurry preparation – NMC (Nickel Manganese Cobalt), LFP (Lithium Iron Phosphate), LCO (Lithium Cobalt Oxide), NCA (Nickel Cobalt Aluminum)
- Anode slurry preparation – Graphite, silicon‑carbon (Si‑C), LTO (Lithium Titanate Oxide)
- Lithium‑ion battery (LIB) production – Electric vehicles (EV), energy storage systems (ESS), power tools
- Next‑generation batteries – Solid‑state electrolyte slurry, gel polymer electrolytes
- High‑viscosity pastes – Conductive adhesives, thermal interface materials
Customization Options
- Different blade designs (frame type, paddle type, twisted frame)
- Higher dispersion speed / power for ultra‑fine grinding
- High‑shear homogenizer or bead mill attachment
- Explosion‑proof electricals for solvent‑based slurries (NMP, etc.)
- PLC + HMI automation with recipe storage and data logging
- Larger working capacities (5L, 10L, 50L, 100L ,500L,1000L available)
FAQ – Frequently Asked Questions
Q1: What types of battery slurries can this planetary mixer handle?
This mixer is optimized for high‑viscosity cathode slurries (NMC, LFP, LCO, NCA) and anode slurries (graphite, silicon‑carbon, LTO). It also handles solid‑state electrolyte slurries, gel polymer electrolytes, and conductive adhesives.
Q2: How does the 3D‑printed kneading blade achieve 4‑5x higher efficiency?
Our blades are investment‑cast via 3D printing and finished with multi‑axis CNC, resulting in an optimized aerodynamic cross‑section that reduces drag and energy consumption. The shape creates kneading, extrusion, and granulation actions, achieving 4‑5x higher mixing efficiency than conventional pentagonal paddle blades.
Q3: Why is vacuum degassing important for battery slurry?
Vacuum degassing (≤ -0.095 MPa) removes entrapped air bubbles that would otherwise cause pinholes, coating defects, and poor electrode adhesion. It also prevents solvent evaporation, ensuring a homogeneous, bubble‑free slurry for consistent coating quality and improved cell safety.
Q4: Can this mixer be used for both water‑based anode and NMP‑based cathode slurries?
Yes. The jacketed vessel and all material‑contact surfaces are made of SUS304/SUS316L stainless steel, resistant to both water‑based and organic solvent systems. Heating can be adjusted via electric, steam, or oil circulation to match specific slurry requirements.
Q5: How does the hydraulic discharge system work?
After mixing, a follow‑plate extruder is hydraulically pressed down to push high‑viscosity paste out of the vessel with minimal residue. This eliminates manual scooping, reduces waste, and simplifies cleaning between batches.
Q6: Is this mixer suitable for R&D and pilot lines?
Yes. The 20L working capacity is ideal for pilot lines, material R&D labs, and small‑batch production. We also offer smaller (5L, 10L) and larger (50L, 100L) models to scale as your production grows.
Q7: What safety certifications do PPCELL mixers hold?
Our mixers meet CE certification and can be configured with explosion‑proof electricals for solvent‑based slurries, ensuring compliance with international safety standards for battery manufacturing equipment.
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Contact Us for Your Custom Slurry Mixing Solution
Contact our engineering team to discuss your cathode or anode slurry mixing requirements. We provide free process consultation, on‑site commissioning, and operator training.