Figure 7
From: Exploration of tetrahedral structures in silicate cathodes using a motif-network scheme
The lowest-energy structure with 2D M-Si-O framework for the Na systems with space group P-1 (#2).
(a–c) Views of the P-1 structure along different lattice vectores. (d) Na-O pyramids extracted from this structure, where every Na atom bonds with 5 O atoms.
