The effect of doping on the ion migration properties of solid electrolytes has been studied before . However, apparently non general conclusive trends could be derived so far. As doping is a statistical process and migration is associated with overcoming many barriers, the coordination effect described above might not be operative. Still overcoming the scaling relations between reaction energies and migration barriers can be so beneficial that we consider it worth the effort trying various approaches to break the scaling relations, with improved migration properties. Reprinted from Ref. , published under a CC BY license.