Skip to main content
. 2020 Oct 16;11:5242. doi: 10.1038/s41467-020-19078-0

Fig. 7. Convex energy hull of Na2Sy phases per mol of S (x = 2/y) from DFT calculations.

Fig. 7

Energy of solid Na2Sy structures is shown with black symbols relative to end-member compositions of solid Na2S and S. The energies of molecular Na2Sy geometries bound to the p-CoS2 (100) surface (magenta), graphene surface (brown) and in the free liquid state (blue) with implicit solvation are shown with dashed lines.