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- Title
High-Speed Laser Drying of Lithium-Ion Battery Anodes: Challenges and Opportunities.
- Authors
Fink, Samuel; Demir, Delil; Börner, Markus; Göken, Vinzenz; Vedder, Christian
- Abstract
In modern electrode manufacturing for lithium-ion batteries, the drying of the electrode pastes consumes a considerable amount of space and energy. To increase the efficiency of the drying process and reduce the footprint of the drying equipment, a laser-based drying process is investigated. Evaporation rates of up to 318 g m−2 s−1 can be measured, which is orders of magnitude higher than the evaporation rates in conventional furnace drying processes. Optical measurements of the slurry components in the visible and near-infrared spectrum are conducted. Thermal analyses the of laser-dried samples reveal that the commonly used binders carboxymethyl-cellulose (CMC) and styrene–butadiene rubber (SBR) are not affected by the laser drying process within the investigated process window. The results indicated that with the combination of a fast laser drying step and a subsequent convection drying step, high evaporation rates can be achieved while maintaining the integrity and adhesion of the anode.
- Subjects
LITHIUM-ion batteries; DRYING apparatus; ANODES; LITHIUM-ion battery manufacturing; OPTICAL measurements; STYRENE-butadiene rubber
- Publication
World Electric Vehicle Journal, 2023, Vol 14, Issue 9, p255
- ISSN
2032-6653
- Publication type
Article
- DOI
10.3390/wevj14090255