  Solid state batteries have emerged as a potential next-generation energy
storage device due to safety and energy density advantages. Development of
electrolyte is one of the most important topics in solid state batteries.
Electrochemical Impedance Spectroscopy (EIS) is a popular measurement technique
to obtain the conductivity and diagnose the electrolyte. Current interpretation
mainly uses the semicircle part of the curves and discards other information
revealed by EIS such as the slope of the curve at low frequency. What is worse,
some features on the curve are not fully interpreted. To better understand the
transport mechanism and interpret EIS curves, we introduce a continuous model
to quantify the ion transport and current flow in the electrolyte. The produced
EIS curves from the model are compared with experiment data to show good
agreement.
