Factors affecting the functioning of solid state fluoride galvanic cells

Fluoride galvanic cells employing CaF₂ as electrolyte have not been as extensively employed for thermodynamic characterization of alloys and compounds as the oxide electrolyte cells based on stabilized zirconia. However, CaF₂ galvanic cells have many advantages over oxide electrolyte cells. These advantages, as well as the factors affecting the proper functioning of the CaF₂ cells, are discussed, highlighting the experimental aspects, such as the interfence by the gas phase, choice of the reference electrode, and the volatility and compatibility of the materials.