Materials for energy - introduction and some synthesis aspects

As materials are essential for electrochemical energy storage, we have attempted to present the research strategies to be implemented in the quest for new compounds. Based on the evolution of atomic radii, electro-negativity and ionization energy within the periodic table, the various rules constituting the inorganic chemist's toolbox have been established. These include notions of redox activity, acid-base behavior and iono-covalence, as well as structural considerations. In the latter case, the tailor's rule, which governs the three-dimensional arrangement of atoms and calls on notions of coordination/size/electrostatic interactions, has been described. The basics of high- and low-temperature synthesis methods were reviewed, and general concepts for precursor selection and synthesis conditions (temperature and oxidizing or reducing atmosphere) were described for each method. Ceramic synthesis of _LiMn2O4 and _LiFePO4 via the " bake and shake " approach, or more specifically via the Pechini process, is detailed, as is low-temperature chemistry via hydro/solvo/ionothermal processes or in solution for carrying out exchange or insertion reactions, or even acid-base reactions.