Fig. 3
From: CAVD, towards better characterization of void space for ionic transport analysis
The Voronoi network (a) and interstitial network (b) obtained from the N3− packing in α-Li3N (icsd_156890). The Li1 site of α-Li3N cannot be identified by Voronoi network, so that the pathways Li1-Li2 and Li1-Li1 cannot be obtained. In contrast, our interstitial network, which includes centers of Voronoi polyhedra faces, identifies all Li sites of α-Li3N and thus migration pathways.
