Dear Altruists I am trying to plot a ternary phase diagram of Li-Al-O2 system. According to the materials project, the Li9Al4 is unstable in the convex hull of Li-Al binary. When I was calculating the formation energy per atom of different structures, I found that the formation energy of Li9Al4 from my VASP calculation (-0.156 eV) does not match with the reference Li9Al4 (mp-56840…