Analysis of Thixotropic Structural Recovery Behavior of Electrode Slurries by Rheo-Impedance
Electrode slurries containing carbon black are widely used in lithium-ion batteries and conductive materials. These slurries are typical non-Newtonian systems that exhibit shear-history-dependent structural changes.
In this study, the structural recovery behavior of carbon black (Ketjen Black) slurries was analyzed using the Rheo-Impedance technique, which combines rheological and electrical impedance measurements. Under steady shear conditions, viscosity and electrical resistance showed a strong inverse correlation. In contrast, after shear cessation, mechanical and electrical networks recovered on different time scales. These results indicate that structural rebuilding in electrode slurries is governed by multiple recovery processes, reflecting distinct mechanisms of network formation and conductive contact re-establishment.
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