All-solid-state batteries (ASSBs) are promising secondary batteries which have been studied for high energy density and safety. However, ASSBs have not had excellent electrochemical performance owing to using solid electrolyte instead of liquid electrolyte. Two main reasons are very low ion conduction property due to complex pathway made with the solid electrolytes and the large decline of the contact area between active materials and the solid electrolytes. In spite of distinct faults were already recognized, there have hardly been the studies because of the difficulty of obtaining the value by using the experiment.

In this study, we tried to gain the values from the simulation technics, which helped us draw the three-dimension electrode structure and check essential properties such as the contact area, tortuosity, and conductivity etc. with the variable electrochemical performance. In order to verify the appropriacy of our computational approach, the component ratio experiment that had been rudimentary for the electrode design was simulated under condition changing the ratio of natural graphite as the active material and LSTP (Li₂O-SiO₂-TiO₂-P₂O₅) as the oxide-based solid electrolyte and then were compared and discussed with the data that anyone could confirm as the experiment.