The crystal structures of the layered intercalation compounds were created based on these structures and elements. The method is shown in Figure . For substances other than GICs, compounds with the crystal structures shown in Figures S2 ~ S5 were screened by compositional formula and space group from the Materials Project, 20 a comprehensive database of inorganic compounds. Subsequently, only substances that had been reported experimentally were extracted, and substances with the same host and stacking were excluded. Subsequently, intercalants M were removed from the structure of the layered intercalation compounds, and the layered compound structures shown in Figure were created as hosts. Then, firstprinciples calculations were performed on the hosts, and those structures that could keep layered structures were adopted as hosts, and only the layered intercalation compounds with these hosts were extracted. Note that the layered compounds obtained here as hosts include virtual compounds. For the GICs, we selected the five structures reported in Figure , yielding a total of 188 layered intercalation compounds, and by changing the intercalant to the 48 elements shown in Figure , we created 9,024 structures of layered intercalation compounds. Thus, from a practical perspective, the structures were created by varying the intercalant using layered intercalation compounds with well-known host structures that have been experimentally reported as the parent materials.