The presence of cationic vacancies and configurational entropy was found to play a crucial role in the ion migration mechanism. The conductivity can be tuned by varying the cationic concentrations among the inter-layer on the conduction layer, as shown in Fig. ) . A general characteristic of honeycomb layered material can be defined in a radar plot, as shown in Fig. ). Sau et al. expanded their MD study to several other honeycomb layered oxide materials, such as A 2 Ni 2 TeO 6 , where A = Li, Na, and K, and Na 2 LiFeTeO 6 . Fig. (j) indicates the goodness of the structural fitting with the XRD structure, whereas a comparative study in A 2 Ni 2 TeO 6 for different cation sizes can provide insights into how different factors, such as ion-ion repulsion , pressure, temperature, and structural stability, affect the diffusion, conductivity, and occupancy of cations at different cationic sites. The study revealed an exponential relationship between cationic diffusion, inter-layer distances (Fig. ), inverse relationship with activation energy (Fig.