Metal Hexacyanoferrates: Ion Insertion (or Exchange) Capabilities

Metal hexacyanoferrates are mixed-valence compounds characterized by open 3D frameworks that confer a variety of properties and allow the applicability in several fields. In this chapter, we focused on ion exchange capabilities. In the first instance, we examined diffusion-driven processes. Secondly, we addressed to electrochemically driven processes, reviewing the main currently used methods and applications