Li-ion battery electrode manufacturing - Energy
Dürr provides a comprehensive turnkey approach for producing battery electrode coated materials. Our capabilities cover both ends of the production line, as well as everything in between. We provide systems for raw material handling, slurry mixing and fluid delivery, web handling, coating and drying, solvent recovery and purification, calendering, and slitting.Li-ion battery electrode manufacturing benefits
By complementing our technology with that of world-class partners, Dürr offers a turnkey battery electrode plant. Manufacturing solutions for optimizing battery electrode production with simultaneous 2-sided coating enabled by the Dürr tensioned-web coating system.
Process overview
Dürr's simultaneous 2-side coating systems provide many benefits, the complete electrode plant increases these benefits by translating them to all process steps:
- Powder Handling
- Slurry Mixing
- Coating & Drying
- Calendering/Roll Pressing
- Secondary Drying
- Slitting
- NMP Recovery & Purification
Improved quality
Two-sided coating coupled with flotation drying offers:
- Improved Side A to Side B alignment
- No edge curl after drying
- Drying consistency for improved yield
- Reduced wrinkles due to flotation drying
Integrated solvent recovery and refining:
- Collects the NMP with condensation to minimize contamination
- Purifies on site with highest quality
- Closes loop for solvent recycling
Lower total costs
Simplified process design requires lower capital investment. In addition, simultaneous two-sided coating with inline calendering/roll pressing reduces operating costs:
- Heating only 1 dryer
- Fewer operators
- Less material waste
- Increased yield
Integrated solvent recovery and refining:
- Includes heat recovery to reduce utility demand
- Minimizes waste
- Provides cost savings by capturing >99% of NMP
Simplified factory layout/material flow
With a straight-path product flow and single-level machine:
- The factory layout can be linear
- Direct slurry piping to a single coating station
- Reduced coating-area floor space
Process development
During the machine build period, Dürr provides customer-specific process development trials, making it possible to dramatically reduce time from commissioning to full production.