Fig.5 Crystal structure of Na11Sn2PS12[76]: (a) the Na1, Na2 sites are fractional occupancy while the Na3, Na4, Na5 ion sites are almost full occupied sites; (b) the small tetragonal cell (a×a×c) equivalent to Li10GeP2S12 is related to the actualtetragonal cell (a′×a′×c′) of Na11Sn2PS12 as follows: a=a′, c=2c′; (c)、(d) view of the ab planes consisting ofinterconnected NaS6 octahedron; (e) view of the sodium atoms chains that run along c
|