Equivalent-Circuit-Based Interpretation of Interfacial Polarization in Aqueous Anode Slurry Impedance

Abstract

A unified impedance framework for both cathode and anode slurry systems is established using slurry impedance spectroscopy (SIS). The impedance response reflects interfacial polarization and conductive network formation, enabling direct correlation between slurry microstructure and electrode performance. In particular, the relaxation frequency (fₚₑₐₖ) serves as a direct descriptor of binder–particle interfacial state. This approach provides a predictive methodology for optimizing slurry formulation and electrode design.