Thermodynamics of lanthanide halides and application to high‐temperature processes

The physicochemical properties of lanthanides, and of their derivatives, contribute essential functions to a range of modern‐day materials and processes. Some fundamental thermodynamic and electrochemical features of lanthanide halide melts are presented. They are illustrated by a few selected examples of relevance for applications ranging from pyroreprocessing of spent nuclear fuel to electrochemical molten salt synthesis of materials.