Abstract

Influence of Layer Thickness on the Drying of Lithium‐Ion Battery Electrodes—Simulation and Experimental Validation

Highlights

  • In this work, a detailed study of the drying of battery electrodes of different thicknesses is presented

  • High solvent loading can be described like the drying of a pure solvent film

  • Introduction stops shrinking at the end of film shrinkage (EOF)

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Summary

Experimental Section

To obtain gravimetric drying curves, the experimental setup using the stationary comb nozzle dryer which was introduced in detail in a previous work was used and is explained here in short.[16] In a second experiment, which was conducted using the comb nozzle dryer, the pore breakthrough to the film bottom was observed. All slurries used in the experiments were mixed using the same procedure and composition. All experiments were repeated at least three times. Four different dry electrode thicknesses were investigated

Slurry Preparation
Gravimetric Drying Curves
Investigation of the Pore-Emptying Behavior
Simulation Model
90 Â 90 Glass plate
Results and Discussion
Experimental Drying Curves of Electrodes with Differing Area Weights
83 Æ 5 176 Æ 13 220 Æ 1 299 Æ 16
Investigation of Pore-Emptying Behavior
Observation of First Empty Pore Breaking Through
Comparison of Experimental Pore Breakthrough and Calculated EOF Shrinkage
Experimental Validation of the Simulation Model
Comparison of the Simulation Models
Conclusion
Data Availability Statement

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