TY  - JOUR
AU  - Wolf, Sebastian
AU  - Schwenzer, Niklas
AU  - Tratz, Tim
AU  - Göken, Vinzenz
AU  - Börner, Markus
AU  - Neb, Daniel
AU  - Heimes, Heiner
AU  - Winter, Martin
AU  - Kampker, Achim
TI  - Optimized LiFePO4-Based Cathode Production for Lithium-Ion Batteries through Laser- and Convection-Based Hybrid Drying Process
JO  - World electric vehicle journal
VL  - 14
IS  - 10
SN  - 2032-6653
CY  - Basel
PB  - MDPI
M1  - FZJ-2024-03205
SP  - 281
PY  - 2023
AB  - The drying of electrodes for lithium-ion batteries is one of the most energy- and cost-intensive process steps in battery production. Laser-based drying processes have emerged as promising candidates for electrode manufacturing due to their direct energy input, spatial homogeneity within the laser spot, and rapid controllability. However, it is unclear to what extent electrode and cell quality are affected by higher heating and drying rates. Hybrid systems as a combination of laser- and convection-based drying were investigated in an experimental study with water-processed LFP cathodes. The manufactured electrodes were compared with purely laser-dried and purely convection-dried samples in terms of drying times and quality characteristics. The electrodes were characterized with regard to physical properties like adhesion and electronic conductivity, as well as electrochemical performance using the rate capability. Regarding adhesion and electronic conductivity, the LFP-based cathodes dried in the hybrid-drying process by laser and convection showed similar quality characteristics compared to conventionally dried cathodes, while, at the same time, significantly reducing the overall drying time. In terms of electrochemical performance, measured by the rate capability, no significant differences were found between the drying technologies used. These findings demonstrate the great potential of laser- and convection-based hybrid drying of LFP cathodes to enhance the electrode-drying process in terms of energy efficiency and operational costs.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001097844900001
DO  - DOI:10.3390/wevj14100281
UR  - https://juser.fz-juelich.de/record/1025927
ER  -