This video, from The Battery Experts video series with Anthony Chalou from Anton Paar delves into the critical topic of electrode powder flowability.
Anthony explains the importance of understanding powder flow properties, which are influenced by factors like compressibility, cohesion, permeability, and friction angle. These properties affect electrode powders' volume change, packing density, flowability, and storage behavior.
To measure these parameters, a powder rheometer equipped with a powder shear cell is typically used. Anthony guides viewers through the setup and calibration process, including installing the mounting plate, selecting the appropriate cell size and measuring geometry, and initializing the instrument.
The analysis involves filling the cell with a uniform powder sample, setting up the method in the software, and running the shear test.
During the test, the rheometer records changes in shear stress and gaps at applied normal stresses, providing insights into the powder’s flow characteristics. The resulting data, including shear curves and yield locus functions, helps determine the powder's flowability under different conditions.
Understanding and measuring the flow properties of electrode powders is essential for optimizing battery manufacturing processes. This video provides a comprehensive guide to assessing powder flowability, ensuring better performance and handling of electrode materials in lithium-ion batteries.
The Battery Experts: Essential Insights for Battery Manufacturing Excellence | Anton Paar
Video Credit: Anton Paar GmbH
This information has been sourced, reviewed and adapted from materials provided by Anton Paar GmbH.
For more information on this source, please visit Anton Paar GmbH.