Transport in Lithium Ion Batteries: Reconciling Impedance and Structural Analysis

Diffusion simulations, electrochemical impedance spectroscopy, and fractal-based random walk analysis can give different values for ion transport in porous media. Comparing results from these different techniques can be used to understand the impact of electrolyte selection, ion surface interactions, and specific structural features on rate performance of electrochemical devices so that the microstructure and chemistry can be systematically optimized.