Pourbaix diagrams

We revisited the elemental Pourbaix diagrams in order to update as well as improve the descriptions of the Pourbaix diagrams where needed.

We made the following changes:

  • Added more ions for Ni, Cu, S and Te.
  • Decided to change the oxide references of Se (from Se2O5 to Se metal) and Tc (from Tc2O7 to TcO2).
  • Added ions for Hf, Ta, Rh and Ir, which previously had no ion energies stored.

Thank you @as2362 and @kapersson for this update. See this post for information on how to download the updated reference data for use e.g. with pymatgen.