Rheological and Thermogravimetric Characterization on Battery Electrode Slurry to Optimize Manufacturing Process Application note

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Rheological and Thermogravimetric Characterization on Battery Electrode Slurry to Optimize Manufacturing Process by TA Instruments (PDF, 301 KB)

This note was written by Hang Kuen Lau and Terri Chen and edited by Nikki Szymurski and Jennifer Vail of TA Instruments

Abstract

Manufacturing electrodes for lithium-ion batteries is a complex, multistep process that can be optimized through the utilization of slurry analysis and characterization. Process optimization requires a thorough understanding of the mixing, coating, and drying conditions of the slurry. In this application note, a TA Discovery HR rotational rheometer facilitates coating optimization by measuring slurry viscosity over different shear rates that relate to coating speed. Drying kinetics are investigated with a Discovery TGA to yield the most cost-efficient condition. TGA is also employed to determine binder and additive contents for dry electrode quality control.